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Tutorial.StringStartsWithEndsWith History

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May 02, 2012, at 10:00 AM by Scott Fitzgerald -
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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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May 02, 2012, at 09:59 AM by Scott Fitzgerald -
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May 02, 2012, at 09:58 AM by Scott Fitzgerald -
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May 02, 2012, at 09:54 AM by Scott Fitzgerald -
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(:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/8.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.ino lang=arduino tabwidth=4:)

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(:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/08.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.ino lang=arduino tabwidth=4:)

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November 15, 2011, at 10:22 PM by Scott Fitzgerald -
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(:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/8.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.pde lang=arduino tabwidth=4:)

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(:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/8.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.ino lang=arduino tabwidth=4:)

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September 19, 2010, at 05:56 PM by Christian Cerrito -
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Code

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Code

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September 19, 2010, at 05:54 PM by Christian Cerrito -
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The String functions startsWith() and endsWith() allow you to check what character or substring a given String starts or ends with. They're basically special cases of substring.

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The String functions startsWith() and endsWith() allow you to check what character or substring a given String starts or ends with. They're basically special cases of substring.

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September 19, 2010, at 05:53 PM by Christian Cerrito -
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No external hardware is required.

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  • Arduino Board
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Circuit

(:div class=circuit :) There is no circuit for this example, though your Arduino must be connected to your computer via USB.

image developed using Fritzing. For more circuit examples, see the Fritzing project page

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Circuit

(:div class=circuit :) There is no circuit for this example. (:divend:)

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September 16, 2010, at 04:56 PM by Tom Igoe -
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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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September 16, 2010, at 04:55 PM by Tom Igoe -
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  stringOne = "HTTP/1.1 200 OK";
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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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  stringOne = "HTTP/1.1 200 OK";
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(:source lang=arduino tabwidth=4:) stringOne = "HTTP/1.1 200 OK";

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 (:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/8.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.pde lang=arduino  tabwidth=4:)
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(:source http://github.com/arduino/Arduino/raw/master/build/shared/examples/8.Strings/StringStartsWithEndsWith/StringStartsWithEndsWith.pde lang=arduino tabwidth=4:)

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August 01, 2010, at 12:02 PM by Tom Igoe -
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The String functions startsWith() and endsWith() allow you to check what character or substring a given String starts or ends with. They're basically special cases of @@substring.

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The String functions startsWith() and endsWith() allow you to check what character or substring a given String starts or ends with. They're basically special cases of substring.

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August 01, 2010, at 12:02 PM by Tom Igoe -
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String Character Functions

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String startsWith and endsWith Functions

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August 01, 2010, at 11:37 AM by Tom Igoe -
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Examples > Strings

String Character Functions

The String functions startsWith() and endsWith() allow you to check what character or substring a given String starts or ends with. They're basically special cases of @@substring.

(:div class=BOM :)

Hardware Required

No external hardware is required. (:divend:)

startsWith() and endsWith() can be used to look for a particular message header, or for a single character at the end of a String. They can also be used with an offset to look for a substring starting at a particular position. For example:

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  stringOne = "HTTP/1.1 200 OK";
  if (stringOne.startsWith("200 OK", 9)) {
    Serial.println("Got an OK from the server"); 
  }

This is functionally the same as this: 

  stringOne = "HTTP/1.1 200 OK";
  if (stringOne.substring(9) == "200 OK") {
    Serial.println("Got an OK from the server"); 
  }

(:divend:)

Caution: If you look for a position that's outside the range of the string,you'll get unpredictable results. For example, in the example above stringOne.startsWith("200 OK", 16) wouldn't check against the String itself, but whatever is in memory just beyond it. For best results, make sure the index values you use for startsWith and endsWith are between 0 and the String's length().

Circuit

(:div class=circuit :) There is no circuit for this example. (:divend:)

Code

(:div class=code :)

(:source

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