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Best way to clear a PHP array's values
Which is more efficient for clearing all values in an array? The first one would require me to use that function each time in the loop of the second example.
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How do I check if an HTML element is empty using jQuery?
I'm trying to call a function only if an HTML element is empty, using jQuery.
17 Answers
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rbenv not changing ruby version
I installed rbenv according to the github directions. I am running OSX but I have tried this on a Ubuntu 12.04 VM and got the same results. The following is what i get in my terminal when I try to change ruby versions:
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Subtract 7 days from current date
It seems that I can't subtract 7 days from the current date. This is how i am doing it:
11 Answers
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What's the yield keyword in JavaScript?
I heard about a "yield" keyword in JavaScript, but I found very poor documentation about it. Can someone explain me (or recommend a site that explains) its usage and what it is used for?
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Does PowerShell support constants?
I would like to declare some integer constants in PowerShell.
6 Answers
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How to see if an object is an array without using reflection?
How can I see in Java if an Object is an array without using reflection?
And how can I iterate through all items without using reflection?
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Why does the C preprocessor interpret the word “linux” as the constant “1”?
Why does the C preprocessor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
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Closure in Java 7 [closed]
What is closure? It is supposed to be included in Java 7. (Closures were discussed for inclusion in Java 7, but in the end were not included. -ed) Can anyone please provide me with some reliable references from where I can learn stuff about closures?
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Find a file in python
I have a file that may be in a different place on each user's machine. Is there a way to implement a search for the file? A way that I can pass the file's name and the directory tree to search in?
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