String: Difference between revisions
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Here we encounter some different syntax rules. Programming languages define strings differently. Please do pay attention to the quotation marks, double quotation marks, and triple quotation marks. | Here we encounter some different syntax rules. Programming languages define strings differently. Please do pay attention to the quotation marks, double quotation marks, and triple quotation marks. | ||
=== PHP === | |||
<syntaxhighlight lang="php"> | <syntaxhighlight lang="php"> | ||
<?php | <?php | ||
| Line 14: | Line 15: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Python === | |||
* Single quotes: 'allows embedded "double" quotes' | * Single quotes: 'allows embedded "double" quotes' | ||
| Line 25: | Line 26: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
=== Javascript === | |||
<syntaxhighlight lang="javascript"> | <syntaxhighlight lang="javascript"> | ||
// decimal number: | // decimal number: | ||
Revision as of 06:16, 7 August 2017
Programming basics[1]
In computer programming, a string is traditionally a sequence of characters, either as a literal constant or as some kind of variable.[2].
Example[edit]
Here we encounter some different syntax rules. Programming languages define strings differently. Please do pay attention to the quotation marks, double quotation marks, and triple quotation marks.
PHP[edit]
<?php
$a = 1234.65; // decimal number
$a = -1234.54; // a negative number
?>
Python[edit]
- Single quotes: 'allows embedded "double" quotes'
- Double quotes: "allows embedded 'single' quotes".
- Triple quoted: Three single quotes, """Three double quotes"""
Triple quoted strings may span multiple lines - all associated whitespace will be included in the string literal.[3]
myString = 'Hello World'
Javascript[edit]
// decimal number:
var a = 1234.65;
// a negative number:
var a = -1234.65;
Do you understand this?[edit]
Standards[edit]
- Define the terms: variable, constant, operator, object.