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How is Python's List Implemented?
...ame time regardless of index:
...>python -m timeit --setup="x = [None]*1000" "x[500]"
10000000 loops, best of 3: 0.0579 usec per loop
...>python -m timeit --setup="x = [None]*1000" "x[0]"
10000000 loops, best of 3: 0.0566 usec per loop
I would be astounded if IronPython or Jython used link...
Using sed, how do you print the first 'N' characters of a line?
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colrm x
For example, if you need the first 100 characters:
cat file |colrm 101
It's been around for years and is in most linux's and bsd's (freebsd for sure), usually by default. I can't remember ever having to type apt-get install colrm.
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Remove commas from the string using JavaScript
... so you can do the maths, you'll need parseFloat:
var total = parseFloat('100,000.00'.replace(/,/g, '')) +
parseFloat('500,000.00'.replace(/,/g, ''));
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Django optional url parameters
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Yuji 'Tomita' TomitaYuji 'Tomita' Tomita
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What's your most controversial programming opinion?
...so on. In actual fact, the performance of one developer can be 10x or even 100x that of another.
It's politically risky to talk about it, but sometimes I feel like pointing out that, even though several team members may appear to be of equal skill, it's not always the case. I have even seen cases w...
Can't find a “not equal” css attribute selector
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Suppose there are 100 divs out of which foo value is absent(foo='') for 50 divs and other 50 divs have different foo value say foo=x or y etc then you need to write 50 selectors if we follow above solution
– Shoaib Chikat...
Override and reset CSS style: auto or none don't work
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width: auto when all I wanted to override was width: 100% -- Thank you
– Meredith
Sep 24 '18 at 4:14
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Copy array items into another array
...ing a new array.
However, it seems that for large arrays (of the order of 100,000 members or more), this trick can fail. For such arrays, using a loop is a better approach. See https://stackoverflow.com/a/17368101/96100 for details.
var newArray = [];
newArray.push.apply(newArray, dataArray1);
new...
Unique random string generation
...ntException("allowedChars may not be empty.");
const int byteSize = 0x100;
var allowedCharSet = new HashSet<char>(allowedChars).ToArray();
if (byteSize < allowedCharSet.Length) throw new ArgumentException(String.Format("allowedChars may contain no more than {0} characters.", by...
SQL SELECT speed int vs varchar
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100
Int comparisons are faster than varchar comparisons, for the simple fact that ints take up muc...