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Why check both isset() and !empty()
Is there a difference between isset and !empty . If I do this double boolean check, is it correct this way or redundant? and is there a shorter way to do the same thing?
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Detect the Enter key in a text input field
I'm trying to do a function if enter is pressed while on specific input.
10 Answers
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Bash script error [: !=: unary operator expected
In my script I am trying to error check if the first and only argument is equal to -v but it is an optional argument. I use an if statement but I keep getting the unary operator expected error.
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C/C++ check if one bit is set in, i.e. int variable
Is there such a way to check if bit 3 in temp is 1 or 0 without bit shifting and masking.
21 Answers
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What is the “volatile” keyword used for?
...The compiler will then avoid any optimisations that may result in problems if the variable changes "outside of its control".
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differentiate null=True, blank=True in django
... will be required in forms. This includes the admin and your custom forms. If blank=True then the field will not be required, whereas if it's False the field cannot be blank.
The combo of the two is so frequent because typically if you're going to allow a field to be blank in your form, you're goin...
What's the scope of the “using” declaration in C++?
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But if you put the using declaration inside a namespace it's limited to the scope of that namespace, so is generally OK (with the usual caveats on your particular needs and style).
– Zero
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How can I delete all unversioned/ignored files/folders in my working copy?
If I have a working copy of a Subversion repository, is there a way to delete all unversioned or ignored files in that working copy with a single command or tool? Essentially, I'm looking for the SVN analogue to git clean .
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How to check if a word is an English word with Python?
I want to check in a Python program if a word is in the English dictionary.
9 Answers
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How do I force files to open in the browser instead of downloading (PDF)?
...ent; filename="filename.pdf"
The quotes around the filename are required if the filename contains special characters such as filename[1].pdf which may otherwise break the browser's ability to handle the response.
How you set the HTTP response headers will depend on your HTTP server (or, if you ar...