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‎Language/Functions/Analog IO/analogRead.adoc

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@@ -16,7 +16,7 @@ subCategories: [ "Analog I/O" ]
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[float]
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=== Description
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Reads the value from the specified analog pin. The Arduino board contains a 6 channel (8 channels on the Mini and Nano, 16 on the Mega), 10-bit analog to digital converter. This means that it will map input voltages between 0 and 5 volts into integer values between 0 and 1023. This yields a resolution between readings of: 5 volts / 1024 units or, .0049 volts (4.9 mV) per unit. The input range and resolution can be changed using link:../analogreference[analogReference()].
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Reads the value from the specified analog pin. The Arduino board contains a 6 channel (7 channels on MKR boards, 8 on the Mini and Nano, 16 on the Mega), 10-bit analog to digital converter. This means that it will map input voltages between 0 and 5 volts into integer values between 0 and 1023. This yields a resolution between readings of: 5 volts / 1024 units or, .0049 volts (4.9 mV) per unit. The input range and resolution can be changed using link:../analogreference[analogReference()].
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It takes about 100 microseconds (0.0001 s) to read an analog input, so the maximum reading rate is about 10,000 times a second.
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[%hardbreaks]
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[float]
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=== Parameters
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`pin`: the number of the analog input pin to read from (0 to 5 on most boards, 0 to 7 on the Mini and Nano, 0 to 15 on the Mega)
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`pin`: the number of the analog input pin to read from (0 to 5 on most boards, 0 to 6 on MKR boards, 0 to 7 on the Mini and Nano, 0 to 15 on the Mega)
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[float]
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=== Returns

‎Language/Functions/Characters/isAlpha.adoc

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---
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title: "isAlpha()"
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categories: [ "Functions" ]
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subCategories: [ "Characters" ]
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---
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= isAlpha(thisChar)
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// OVERVIEW SECTION STARTS
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[#overview]
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--
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[float]
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=== Description
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Analyse if a char is alpha (that is a letter). Returns true if thisChar contains a letter.
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[%hardbreaks]
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[float]
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=== Syntax
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[source,arduino]
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----
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isAlpha(thisChar)
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----
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[float]
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=== Parameters
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`thisChar`: variable. *Allowed data types:* char
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[float]
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=== Returns
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`true`: if thisChar is alpha.
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--
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// OVERVIEW SECTION ENDS
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// HOW TO USE SECTION STARTS
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[#howtouse]
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--
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[float]
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=== Example Code
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[source,arduino]
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----
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if (isAlpha(this)) // tests if this is a letter
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{
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Serial.println("The character is a letter");
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}
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else
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{
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Serial.println("The character is not a letter");
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}
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----
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--
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// HOW TO USE SECTION ENDS
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// SEE ALSO SECTION
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[#see_also]
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--
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[float]
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=== See also
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[role="language"]
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* #LANGUAGE# link:../../../variables/data-types/char[char]
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* #LANGUAGE# link:../../../structure/control-structure/if[if (conditional operators)]
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* #LANGUAGE# link:../../../structure/control-structure/while[while (conditional operators)]
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* #LANGUAGE# link:../../communication/serial/read[read()]
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--
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// SEE ALSO SECTION ENDS
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---
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title: "isAlpha()"
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categories: [ "Functions" ]
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subCategories: [ "Characters" ]
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---
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= isAlpha(thisChar)
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// OVERVIEW SECTION STARTS
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[#overview]
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--
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[float]
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=== Description
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Analyse if a char is alpha (that is a letter). Returns true if thisChar contains a letter.
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[%hardbreaks]
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[float]
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=== Syntax
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[source,arduino]
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----
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isAlpha(thisChar)
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----
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[float]
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=== Parameters
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`thisChar`: variable. *Allowed data types:* char
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[float]
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=== Returns
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`true`: if thisChar is alpha.
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--
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// OVERVIEW SECTION ENDS
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// HOW TO USE SECTION STARTS
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[#howtouse]
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--
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[float]
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=== Example Code
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[source,arduino]
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----
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if (isAlpha(this)) // tests if this is a letter
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{
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Serial.println("The character is a letter");
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}
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else
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{
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Serial.println("The character is not a letter");
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}
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----
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--
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// HOW TO USE SECTION ENDS
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// SEE ALSO SECTION
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[#see_also]
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--
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[float]
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=== See also
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[role="language"]
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* #LANGUAGE# link:../../../variables/data-types/char[char]
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* #LANGUAGE# link:../../../structure/control-structure/if[if (conditional operators)]
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* #LANGUAGE# link:../../../structure/control-structure/while[while (conditional operators)]
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* #LANGUAGE# link:../../communication/serial/read[read()]
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--
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// SEE ALSO SECTION ENDS

‎Language/Functions/Characters/isAlphaNumeric.adoc

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---
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title: "isAlphaNumeric()"
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categories: [ "Functions" ]
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subCategories: [ "Characters" ]
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---
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= isAlphaNumeric(thisChar)
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// OVERVIEW SECTION STARTS
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[#overview]
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--
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[float]
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=== Description
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Analyse if a char is alphanumeric (that is a letter or a numbers). Returns true if thisChar contains either a number or a letter.
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[%hardbreaks]
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[float]
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=== Syntax
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[source,arduino]
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----
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`isAlphaNumeric(thisChar)`
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----
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[float]
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=== Parameters
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`thisChar`: variable. *Allowed data types:* char
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[float]
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=== Returns
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`true`: if thisChar is alphanumeric.
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--
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// OVERVIEW SECTION ENDS
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// HOW TO USE SECTION STARTS
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[#howtouse]
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--
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[float]
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=== Example Code
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[source,arduino]
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----
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if (isAlphaNumeric(this)) // tests if this isa letter or a number
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{
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Serial.println("The character is alphanumeric");
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}
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else
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{
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Serial.println("The character is not alphanumeric");
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}
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----
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--
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// HOW TO USE SECTION ENDS
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// SEE ALSO SECTION
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[#see_also]
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--
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[float]
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=== See also
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[role="language"]
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* #LANGUAGE# link:../../../variables/data-types/char[char]
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* #LANGUAGE# link:../../../structure/control-structure/if[if (conditional operators)]
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* #LANGUAGE# link:../../../structure/control-structure/while[while (conditional operators)]
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* #LANGUAGE# link:../../communication/serial/read[read()]
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--
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---
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title: "isAlphaNumeric()"
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categories: [ "Functions" ]
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subCategories: [ "Characters" ]
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---
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= isAlphaNumeric(thisChar)
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// OVERVIEW SECTION STARTS
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[#overview]
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--
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[float]
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=== Description
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Analyse if a char is alphanumeric (that is a letter or a numbers). Returns true if thisChar contains either a number or a letter.
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[%hardbreaks]
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[float]
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=== Syntax
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[source,arduino]
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----
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`isAlphaNumeric(thisChar)`
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----
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[float]
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=== Parameters
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`thisChar`: variable. *Allowed data types:* char
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[float]
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=== Returns
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`true`: if thisChar is alphanumeric.
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--
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// OVERVIEW SECTION ENDS
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// HOW TO USE SECTION STARTS
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[#howtouse]
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--
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[float]
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=== Example Code
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[source,arduino]
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----
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if (isAlphaNumeric(this)) // tests if this isa letter or a number
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{
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Serial.println("The character is alphanumeric");
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}
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else
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{
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Serial.println("The character is not alphanumeric");
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}
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----
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--
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// HOW TO USE SECTION ENDS
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// SEE ALSO SECTION
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[#see_also]
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--
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[float]
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=== See also
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[role="language"]
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* #LANGUAGE# link:../../../variables/data-types/char[char]
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* #LANGUAGE# link:../../../structure/control-structure/if[if (conditional operators)]
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* #LANGUAGE# link:../../../structure/control-structure/while[while (conditional operators)]
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* #LANGUAGE# link:../../communication/serial/read[read()]
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--
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// SEE ALSO SECTION ENDS

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