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Test whether string is a valid integer
... indicates the beginning of the input pattern
The - is a literal "-"
The ? means "0 or 1 of the preceding (-)"
The + means "1 or more of the preceding ([0-9])"
The $ indicates the end of the input pattern
So the regex matches an optional - (for the case of negative numbers), followed by one or mor...
Remove Trailing Slash From String PHP
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@NorthbornDesign: Do you have an example? You mean trimming a *nix path on Windows, and vice versa, not just native paths?
– Jens
Feb 9 '16 at 20:23
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What is the meaning of single and double underscore before an object name?
Can someone please explain the exact meaning of having leading underscores before an object's name in Python, and the difference between both?
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What exactly does the enable-background attribute do?
...ckgroundImage Illustrator rather ruinied it by putting it everywhere which means that a UA cannot use it in the way it was intended to be used. That and the fact that it was pretty much impossible to implement the spec as written ensured its demise.
– Robert Longson
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LINQPad [extension] methods [closed]
...h "+" prefix - the prefix inverts the logic of the exclude parameter. This means, if you provide a comma-separated list of variables, all except the ones specified are hidden (in the example "+b,d": b and d are shown, all others hidden)
store included and excluded properties in a variable (new since...
How do you stretch an image to fill a while keeping the image's aspect-ratio?
... @Alex_Zhong, you misunderstand aspect ratio. Aspect ratio means that the image is not stretched in any direction (so a perfect circle would not become an oval in either width or height). Cropping may be a necessary part of maintaining aspect ratio (as it is in the OP's use case).
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Media Queries - In between two widths
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The accepted answer is not wrong by any means, but I think that using min-width to max-width is a more clear, readable convention.
– Dave Powers
Dec 5 '17 at 16:46
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What does HTTP/1.1 302 mean exactly?
Some article I read once said that it means jumping (from one URI to another), but I detected this "302" even when there was actually no jumping at all!
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Converting a Uniform Distribution to a Normal Distribution
...ce, e.g. between 0.0 and 1.0) into a normal distribution? What if I want a mean and standard deviation of my choosing?
16 A...
GCC -g vs -g3 GDB Flag: What is the Difference?
...ee below).
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-ggdb
Produce debugging information for use by GDB. This means to use the most expressive format available (DWARF 2, stabs, or the native
format if neither of those are supported), including GDB extensions if
at all possible.
-gvmslevel
Request debugging information and also use...