https://code-reference.com/ 2026-04-25T13:10:12+02:00 https://code-reference.com/ https://code-reference.com/ttps://code-reference.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-02-16T01:04:11+02:00 https://code-reference.com/arduino/data_types/booleanvariables?rev=1708041851&do=diff A boolean holds one of two values, true or false. (Each boolean variable occupies one byte of memory.) Example int LEDpin = 5; // LED on pin 5 int switchPin = 13; // momentary switch on 13, other side connected to ground boolean running = false; void setup() { pinMode(LEDpin, OUTPUT); pinMode(switchPin, INPUT); digitalWrite(switchPin, HIGH); // turn on pullup resistor } void loop() { if (digitalRead(switchPin) == LOW) { // switch is pressed - pullup keeps pin high … text/html 2013-02-15T20:49:14+02:00 https://code-reference.com/arduino/constants/constants?rev=1360957754&do=diff Constants are predefined variables in the Arduino language. They are used to make the programs easier to read. We classify constants in groups. Defining Logical Levels, true and false (Boolean Constants) There are two constants used to represent truth and falsity in the Arduino language: true, and false. text/html 2024-02-16T01:04:15+02:00 https://code-reference.com/arduino/bitwise_operators/bitwiseand?rev=1708041855&do=diff Bitwise AND (&) The bitwise operators perform their calculations at the bit level of variables. They help solve a wide range of common programming problems. Much of the material below is from an excellent tutorial on bitwise math wihch may be found here. text/html 2024-02-16T00:48:17+02:00 https://code-reference.com/arduino/boolean_operators?rev=1708040897&do=diff boolean operators Overview Name Description boolean boolean automatically generated overview ... Change this page if you have a better description text/html 2024-02-16T01:04:19+02:00 https://code-reference.com/arduino/boolean_operators/boolean?rev=1708041859&do=diff !Boolean Operators These can be used inside the condition of an if (conditional) and ==, !=, <, > (comparison operators) statement. && (logical and) True only if both operands are true, e.g. if (digitalRead(2) == HIGH && digitalRead(3) == HIGH) { // read two switches // ... } text/html 2018-01-12T07:29:08+02:00 https://code-reference.com/arduino?rev=1515738548&do=diff Arduino Reference Overview Name Description advanced io Overview advanced I/O analog io Overview analog I/O arithmetic operators Overview arithmetic operators bits and bytes Overview bits and bytes bitwise operators Overview bitwise operators boolean operators Overview boolean operators communication Overview communication constants Overview constants control structures Overview control structures conversion Overview conversion data types Overview data types digital io Ove… text/html 2024-02-16T01:12:24+02:00 https://code-reference.com/objective-c/foundation.framework/nsstring.h/isequaltostring?rev=1708042344&do=diff isEqualToString - (BOOL)isEqualToString:(NSString *)aString; Returns a Boolean value that indicates whether a given string is equal to the receiver using an literal Unicode-based comparison. ObjC Sourcecode Example NSString *myString1=@"Hello World"; NSString *myString2=@"Hello World"; if([myString1 isEqualToString:myString2]){ NSLog(@"similar"); } else{ NSLog(@"dissimilar"); } … text/html 2024-02-16T01:05:56+02:00 https://code-reference.com/c/graphics.h/registermousehandler?rev=1708041956&do=diff registermousehandler Example of registermousehandler /* mouse example */ #include "graphics.h" // The click_handler will be called whenever the left mouse button is // clicked. It checks copies the x,y coordinates of the click to // see if the click was on a red pixel. If so, then the boolean // variable red_clicked is set to true. Note that in general // all handlers should be quick. If they need to do more than a little // work, they should set a variable that will trigger the work going, … text/html 2024-02-16T01:05:52+02:00 https://code-reference.com/c/graphics.h/mousex?rev=1708041952&do=diff mousex Syntax of mousex #include "graphics.h" int mousex(void); Description of mousex The mousex function is available in the winbgim implementation of BGI graphics. It returns the most recent x coordinate of the mouse within the graphics window. X-coordinates start with 0 at the left edge of the window and increase to getmaxx( ) at the right edge of the window. text/html 2024-02-16T01:05:51+02:00 https://code-reference.com/c/graphics.h/mousey?rev=1708041951&do=diff mousey Syntax of mousey #include "graphics.h" int mousey(void); Description of mousey The mousey function is available in the winbgim implementation of BGI graphics. It returns the most recent y coordinate of the mouse within the graphics window. Y-coordinates start with 0 at the top edge of the window and increase to getmaxy( ) at the bottom edge of the window. text/html 2018-01-12T07:29:06+02:00 https://code-reference.com/java/datatypes?rev=1515738546&do=diff package datatypes; public class DataTypes { public static void main(String[] args) { // primitiv Datatypes boolean aa = true; // 1 bit char bb = 'A'; // 2 Bytes char cc = 65; // 2 Bytes byte dd = 12; // 1 Byte -128 - +127 short ee = 234; // 2 Bytes -32768 - +32767 int ff = 4711; // 4 Bytes long gg = 34567; // 8 Bytes float hh = 3.14f; // 4 Bytes d… text/html 2013-04-10T10:12:37+02:00 https://code-reference.com/java/lang/object/equals?rev=1365581557&do=diff Compares object and indecates if they equal equals(Object); return value: boolean true/false equals Example in java String a = "42"; String b = "144"; if ( a.equals(b) ) { System.out.println(b+" is the answer"); } else { System.out.println(b+" is probably not the answer"); } text/html 2024-02-16T01:12:01+02:00 https://code-reference.com/java/io/printstream/checkerror?rev=1708042321&do=diff Flush the stream and return the value of error flag checkError(); return value: boolean true/false Language Example no example jet output output for example text/html 2024-02-16T01:04:08+02:00 https://code-reference.com/arduino/control_structures/while?rev=1708041848&do=diff Description while loops will loop continuously, and infinitely, until the expression inside the parenthesis, () becomes false. Something must change the tested variable, or the while loop will never exit. This could be in your code, such as an incremented variable, or an external condition, such as testing a sensor. text/html 2024-02-16T01:12:02+02:00 https://code-reference.com/java/io/printstream/print?rev=1708042322&do=diff Outputs the string parameter without a line return print(parameter): void parameters are: boolean, char, char[], double, float, int, long, Object, String return value: void Language Example System.out.print("Hello"); System.out.print("I am a programmer"); text/html 2013-04-15T09:30:44+02:00 https://code-reference.com/java/io/printstream/format?rev=1366011044&do=diff format args to the format string format and write the result to the stream format(String format, Object... args); return value: stream sign Description 0 if the place is not busy they prints a 0 # if the place is not busy they prints nothing . decimal separator Separates and decimal places. , Groups the numbers (a group is as large as the distance from ”,” to ”.”). ; Delimiter. To the left of the pattern is positive, the right for negative numbers. - The default character for the negative… text/html 2024-02-16T01:12:02+02:00 https://code-reference.com/java/io/printstream/flush?rev=1708042322&do=diff After all pending data is send to stream the stream will be flushed flush(); return value: boolean true/false Language Example no example jet output no output jet text/html 2024-02-16T01:12:25+02:00 https://code-reference.com/objective-c/foundation.framework/nsnumber.h/isequaltonumber?rev=1708042345&do=diff - (BOOL)isEqualToNumber:(NSNumber *)number; Returns a Boolean value that indicates whether the receiver and a given number are equal. ObjC Sourcecode Example NSNumber *myBoolNumberYES = [NSNumber numberWithBool:YES]; NSNumber *myBoolNumberNO = [NSNumber numberWithBool:NO]; NSNumber *myIntNumber2_a = [NSNumber numberWithInt:2]; NSNumber *myIntNumber2_b = [NSNumber numberWithFloat:2.0]; if ([myBoolNumberNO isEqualToNumber:myBoolNumberYES]) { NSLog(@"NU… text/html 2024-02-16T01:12:02+02:00 https://code-reference.com/java/io/printstream/println?rev=1708042322&do=diff This line outputs the string parameter to the console with a line return. println(parameter): void parameters are: boolean, char, char[], double, float, int, long, Object, String Language Example System.out.println("Hello"); System.out.println("I am a programmer"); System.out.println(" 3 + 4 = " + 3+4 ); // appends 3 and 4 to the string System.out.println(" 3 + 4 = " + (3+4) ); // calculate 3+4 before the string "7" added