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Checking if array is multidimensional or not?
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The short answer is no you can't do it without at least looping implicitly if the 'second dimension' could be anywhere. If it has to be in the first item, you'd just do
is_array($arr[0]);
But, the most efficient general way I c...
Return type of '?:' (ternary conditional operator)
... have a type and - as it's known in the latest C++ standard - a value category.
A conditional expression can be an lvalue or an rvalue. This is its value category. (This is somewhat of a simplification, in C++11 we have lvalues, xvalues and prvalues.)
In very broad and simple terms, an lvalue refers...
How to detect if my shell script is running through a pipe?
...m within a shell script if its standard output is being sent to a terminal or if it's piped to another process?
6 Answers
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Should ol/ul be inside or outside?
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The short answer is that ol elements are not legally allowed inside p elements.
To see why, let's go to the spec! If you can get comfortable with the HTML spec, it will answer many of your questions and curiosities. You want to kno...
How do I pipe or redirect the output of curl -v?
For some reason the output always gets printed to the terminal, regardless of whether I redirect it via 2> or > or |. Is there a way to get around this? Why is this happening?
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Redis: possible to expire an element in an array or sorted set?
... them get auto removed 1 hour after insertion. Is that currently possible, or would it require running a cron job to do the purging manually?
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MySQL WHERE: how to write “!=” or “not equals”?
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The != operator most certainly does exist! It is an alias for the standard <> operator.
Perhaps your fields are not actually empty strings, but instead NULL?
To compare to NULL you can use IS NULL or IS NOT NULL or the null safe e...
what is faster: in_array or isset? [closed]
This question is merely for me as I always like to write optimized code that can run also on cheap slow servers (or servers with A LOT of traffic)
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how do i block or restrict special characters from input fields with jquery?
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This doesn't work for pasted text & may also prevent the user from non-text keypresses like backspace, arrow keys, etc.
– bendytree
Jul 2 '12 at 17:41
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Execution of Python code with -m option or not
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When you use the -m command-line flag, Python will import a module or package for you, then run it as a script. When you don't use the -m flag, the file you named is run as just a script.
The distinction is important when you try to run a package. There is a big difference betwe...