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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
Checking if a double (or float) is NaN in C++
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According to the IEEE standard, NaN values have the odd property that comparisons involving them are always false. That is, for a float f, f != f will be true only if f is NaN.
Note that, as some comments below have pointed out, not all compilers ...
How do I view the list of functions a Linux shared library is exporting?
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What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
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00012ea0 T alcSetThreadContext
000140f0 T alcSuspendContext
U atanf
U calloc
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Exported sumbols are indicated by a T. Required symbols that mus...
Pass a variable into a partial, rails 3?
... edited Nov 16 '15 at 21:46
Andrew Whitaker
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answered Jan 15 '11 at 16:17
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Get and set position with jQuery .offset()
How to get and set the position of an element with the jQuery .offset method?
5 Answers
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How do I make the scrollbar on a div only visible when necessary?
...ote, you can also specify for only the x, or y scrollbar: overflow-x: auto and overflow-y: auto).
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Proper way to add svn:executable
...few other files were checked in without the executable bit do not have it, and I want to set the svn:executable property:
2...
How to disable editing of elements in combobox for c#?
...ethod I use because changing DropDownSyle to DropDownList makes it look 3D and sometimes its just plain ugly.
You can prevent user input by handling the KeyPress event of the ComboBox like this.
private void ComboBox1_KeyPress(object sender, KeyPressEventArgs e)
{
e.Handled = true;
}
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JS - get image width and height from the base64 code
...ve a base64 img encoded that you can find here . How can I get the height and the width of it?
4 Answers
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Looping through a hash, or using an array in PowerShell
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Christian's answer works well and shows how you can loop through each hash table item using the GetEnumerator method. You can also loop through using the keys property. Here is an example how:
$hash = @{
a = 1
b = 2
c = 3
}
$hash.Keys | % { "...