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JavaScript check if variable exists (is defined/initialized)
Which method of checking if a variable has been initialized is better/correct?
(Assuming the variable could hold anything (string, int, object, function, etc.))
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How to implement not with if statement in Ember Handlebars?
...ess}}
Also keep in mind that you can insert an {{else}} in between an {{#if}} or {{#unless}} and the closing tag.
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One line if statement not working
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Remove if from if @item.rigged ? "Yes" : "No"
Ternary operator has form condition ? if_true : if_false
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How do I tell if a regular file does not exist in Bash?
I've used the following script to see if a file exists:
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PHP - How to check if a string contains a specific text [duplicate]
Suppose I have the code above, how to write the statement "if($a exist 'some text')"?
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IF statement: how to leave cell blank if condition is false (“” does not work)
I would like to write an IF statement, where the cell is left blank if the condition is FALSE.
Note that, if the following formula is entered in C1 ( for which the condition is false ) for example:
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Check if a string is null or empty in XSLT
How can I check if a value is null or empty with XSL ?
14 Answers
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Meaning of “[: too many arguments” error from if [] (square brackets)
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If your $VARIABLE is a string containing spaces or other special characters, and single square brackets are used (which is a shortcut for the test command), then the string may be split out into multiple words. Each of these ...
Is there any significant difference between using if/else and switch-case in C#?
What is the benefit/downside to using a switch statement vs. an if/else in C#. I can't imagine there being that big of a difference, other than maybe the look of your code.
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Is it a bad practice to use an if-statement without curly braces? [closed]
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The problem with the first version is that if you go back and add a second statement to the if or else clauses without remembering to add the curly braces, your code will break in unexpected and amusing ways.
Maintainability-wise, it's always smarter to use the secon...