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Best way to test for a variable's existence in PHP; isset() is clearly broken
...ng them as though they were. However, since they can be iterated, counted, etc, a missing value is not the same as one whose value is null.
The answer in this case, is to use array_key_exists() instead of isset().
Since this is takes the array to check as a function argument, PHP will still raise ...
C++ IDE for Linux? [closed]
...t with the various tools — Debuggers (gdb), Profilers (gprof, valgrind), etc. You set up your project/build environment using Make, CMake, SnakeMake or any of the various alternatives. And you manage your code with a version control system (most people use Git). You also use tmux (previously also ...
Get int value from enum in C#
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Since Enums can be any integral type (byte, int, short, etc.), a more robust way to get the underlying integral value of the enum would be to make use of the GetTypeCode method in conjunction with the Convert class:
enum Sides {
Left, Right, Top, Bottom
}
Sides side = Sides.B...
HTML Input=“file” Accept Attribute File Type (CSV)
...t;input type="file" accept="text/plain" />
For Image Files (.png/.jpg/etc), use:
<input type="file" accept="image/*" />
For HTML Files (.htm,.html), use:
<input type="file" accept="text/html" />
For Video Files (.avi, .mpg, .mpeg, .mp4), use:
<input type="file" accept="vi...
How can I update npm on Windows?
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Close /shutdown other consoles .. command prompts and PowerShell windows, etc. Even if you're using npm in a command prompt, close it.
npm -v (3.10.8)
node -v ( v6.6.0)
DONE. I'm at the version that I want.
share
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Open another application from your own (intent)
...Intent().getExtras() => if(extras != null) { extras.getString("blah") } etc
– Gaurav Vaish
Nov 19 '13 at 1:24
2
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Where can I get a “useful” C++ binary search algorithm?
...ound
}
Another solution would be to use a std::set, which guarantees the ordering of the elements and provides a method iterator find(T key) that returns an iterator to the given item. However, your requirements might not be compatible with the use of a set (for example if you need to store the sa...
What is this 'Lambda' everyone keeps speaking of?
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The above abstraction may not be that useful, but there are other higher order functions, like forEach, that perform much more useful tasks. For example filter:
var numbers = [1, 2, 3, 4];
var even = [];
// keep all even numbers from above array
for (var i=0; i<numbers.length; i++) {
i...
What does “./” (dot slash) refer to in terms of an HTML file path location?
...der and ONLY the current folder. So if there is some kind of tool/compiler/etc that searches for the file, then './file' will search ONLY in current folder, whereas 'file' will search wherever the tool is configured to search (e.g. root, current folder, etc.)
– Marcel Toth
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HTML table headers always visible at top of window when viewing a large table
...blesorter.htm from Github? I haven't modified the tablesorter code, but in order to make it work you need to apply the StickyTableHeader plugin before tablesorter.
– jmosbech
Oct 12 '11 at 20:19
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