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Matplotlib: “Unknown projection '3d'” error
... aha, interesting! saw it in the examples but guessed it is for older versions only. Thanks
– dashesy
Apr 24 '13 at 2:49
2
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How to implement “select all” check box in HTML?
...ction toggle(source) {
checkboxes = document.getElementsByName('foo');
for(var checkbox in checkboxes)
checkbox.checked = source.checked;
}
</script>
<input type="checkbox" onClick="toggle(this)" /> Toggle All<br/>
<input type="checkbox" name="foo" value="bar1"> Bar...
How to invoke the super constructor in Python?
... initialiser twice.
Another way is to use super(), as others have shown. For single-inheritance, it does basically the same thing as letting you call the parent's initialiser.
However, super() is quite a bit more complicated under-the-hood and can sometimes be counter-intuitive in multiple inheri...
What does -D_XOPEN_SOURCE do/mean?
...SOURCE=<some number>
it tells your compiler to include definitions for some extra functions that are defined in the X/Open and POSIX standards.
This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as ...
PHP - include a php file and also send query parameters
...
Also note: $_GET will be the same for all included files. So if that is where your query parameters are stored, it will still see them. Also note: it is not the function, in a class.
– Jonathon
Apr 27 '13 at 16:18
...
Easy pretty printing of floats in python?
... see all decimals of really precise numbers, but get rid of trailing zeros for example, use the formatting string %g:
np.set_printoptions(formatter={"float_kind": lambda x: "%g" % x})
For just printing once and not changing global behavior, use np.array2string with the same arguments as above.
...
How do I check if the Java JDK is installed on Mac?
...r telling you that Java needs to be installed, so this isn't a good option for scripts.
– a paid nerd
Jan 5 '16 at 18:15
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JavaScript function similar to Python range()
...p; start <= stop)) {
return [];
}
var result = [];
for (var i = start; step > 0 ? i < stop : i > stop; i += step) {
result.push(i);
}
return result;
};
See this jsfiddle for a proof.
Comparison between range() in JavaScript and Python
It works in...
undefined reference to `WinMain@16'
...
int main()
{
MessageBox( 0, "Blah blah...", "My Windows app!", MB_SETFOREGROUND );
}
Now let's build it using GNU toolchain (i.e. g++), no special options. Here gnuc is just a batch file that I use for that. It only supplies options to make g++ more standard:
C:\test> gnuc x.cpp
C:\tes...
boost::flat_map and its performance compared to map and unordered_map
It is common knowledge in programming that memory locality improves performance a lot due to cache hits. I recently found out about boost::flat_map which is a vector based implementation of a map. It doesn't seem to be nearly as popular as your typical map / unordered_map so I haven't been able ...