Added core String library examples

build/shared/examples/8.Strings/StringAdditionOperator/StringAdditionOperator.pde

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+/*
+  Adding Strings together
+ 
+ Examples of how to add strings together
+ You can also add several different data types to string, as shown here:
+ 
+ The circuit:  No external hardware needed.
+ 
+ created 27 July 2010
+ by Tom Igoe
+ 
+ This example code is in the public domain.
+ 
+ */
+
+// declare three strings:
+String stringOne, stringTwo, stringThree;
+
+void setup() {
+  Serial.begin(9600);
+  stringOne = String("stringThree = ");
+  stringTwo = String("this string");
+  stringThree = String ();
+  Serial.println("\n\nAdding strings together (concatenation):");
+}
+
+void loop() {
+  // adding a constant integer to a string:
+  stringThree =  stringOne + 123;
+  Serial.println(stringThree);    // prints "You added 123"
+
+  // adding a constant long interger to a string:
+  stringThree = stringOne + 123456789;
+  Serial.println(stringThree);    // prints " You added 123456789"
+
+  // adding a constant character to a string:
+  stringThree =  stringOne + 'A';
+  Serial.println(stringThree);    // prints "You added A"
+
+  // adding a constant string to a string:
+  stringThree =  stringOne +  "abc";
+  Serial.println(stringThree);    // prints "You added abc"
+
+  stringThree = stringOne + stringTwo;
+  Serial.println(stringThree);    // prints "You added this string"
+
+  // adding a variable integer to a string:
+  int sensorValue = analogRead(0);
+  stringOne = "Sensor value: ";
+  stringThree = stringOne  + sensorValue;
+  Serial.println(stringThree);    // prints "Sensor Value: 401" or whatever value analogRead(0) has
+
+  // adding a variable long integer to a string:
+  long currentTime = millis();
+  stringOne="millis() value: ";
+  stringThree = stringOne + millis();
+  Serial.println(stringThree);    // prints "The millis: 345345" or whatever value currentTime has
+
+  // do nothing while true:
+  while(true);
+}
+
+
+
+
+
+
+
+
+
+
+
+

build/shared/examples/8.Strings/StringAdditionOperator/data/readme.txt

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+Arduino is an open-source physical computing platform based on a simple i/o
+board and a development environment that implements the Processing/Wiring
+language. Arduino can be used to develop stand-alone interactive objects or
+can be connected to software on your computer (e.g. Flash, Processing, MaxMSP).
+The boards can be assembled by hand or purchased preassembled; the open-source
+IDE can be downloaded for free.
+
+For more information, see the website at: http://www.arduino.cc/
+or the forums at: http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl
+
+To report a bug or a make a suggestions, go to:
+[hardware] http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=hwbugs
+[software] http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs
+
+INSTALLATION
+Detailed instructions are in reference/Guide_Windows.html and
+reference/Guide_MacOSX.html.  For Linux, see the Arduino playground:
+http://www.arduino.cc/playground/Learning/Linux
+
+If you are using a USB Arduino, you will need to install the drivers for the
+FTDI chip on the board. These can be found in the drivers/ directory.
+
+* On Windows, plug in the Arduino board and point the Windows Add Hardware
+  wizard to the drivers/FTDI USB Drivers sub-directory of the Arduino
+  application directory.
+
+* On the Mac, install the FTDIUSBSerialDriver_10_4_10_5_10_6.mpkg package.
+  
+* On Linux, drivers are included in kernel versions 2.4.20 or greater.
+
+CREDITS
+Arduino is an open source project, supported by many.
+
+The Arduino team is composed of Massimo Banzi, David Cuartielles, Tom Igoe,
+Gianluca Martino, and David A. Mellis.
+
+Arduino uses the GNU avr-gcc toolchain, avrdude, avr-libc, and code from
+Processing and Wiring.
+
+Icon Design and Artwork created by Thomas Glaser (envis precisely).
+