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Use curly braces to initialize a Set in Python
...comprehensive syntax to initialize sets:
>>> a = {x for x in """didn't know about {} and sets """ if x not in 'set' }
>>> a
set(['a', ' ', 'b', 'd', "'", 'i', 'k', 'o', 'n', 'u', 'w', '{', '}'])
share
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“please check gdb is codesigned - see taskgated(8)” - How to get gdb installed with homebrew code si
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This error occurs because OSX implements a pid access policy which requires a digital signature for binaries to access other processes pids. To enable gdb access to other processes, we must first code sign the binary. This signature depends on a particular certificate,...
jQuery / Javascript - How do I convert a pixel value (20px) to a number value (20)
...ut I'd like to be able to use X("20em") for example and get back the true width in pixels.
– Lawrence I. Siden
May 20 '11 at 22:53
2
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Passing command line arguments in Visual Studio 2010?
...ed to seprate then with ; , and we set the path in the normal way like we did in c++ ?
– Rocket
Sep 7 '13 at 15:58
5
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Convert a python 'type' object to a string
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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How to add image to canvas
...d before you draw it. Try this instead:
var canvas = document.getElementById('viewport'),
context = canvas.getContext('2d');
make_base();
function make_base()
{
base_image = new Image();
base_image.src = 'img/base.png';
base_image.onload = function(){
context.drawImage(base_image, 0, 0)...
Sending “User-agent” using Requests library in Python
... User Agent 1.0',
'From': 'youremail@domain.com' # This is another valid field
}
response = requests.get(url, headers=headers)
If you're using requests v2.12.x and older
Older versions of requests clobbered default headers, so you'd want to do the following to preserve default headers and t...
Breaking a list into multiple columns in Latex
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Oracle: If Table Exists
...nd most efficient way is to catch the "table not found" exception: this avoids the overhead of checking if the table exists twice; and doesn't suffer from the problem that if the DROP fails for some other reason (that might be important) the exception is still raised to the caller:
BEGIN
EXECUTE...
Does R have an assert statement as in python?
...
@Nick, no. Use stopifnot() for validity testing, to test that code is doing what it's supposed to be doing, but if (blahdiblah) stop("error message") for input testing, to test that the input to the program is valid. Only the latter should ever happen during ...