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Appending the same string to a list of strings in Python
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answered Jan 12 '10 at 16:51
gahooagahooa
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Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc
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edited Jun 4 '10 at 12:40
scunliffe
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Django: accessing session variables from within a template?
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answered Mar 31 '10 at 10:11
Ludwik TrammerLudwik Trammer
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How can I remove the first line of a text file using bash/sed script?
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1073
Try tail:
tail -n +2 "$FILE"
-n x: Just print the last x lines. tail -n 5 would give you t...
How to set data attributes in HTML elements
I have a div with an attribute data-myval = "10" . I want to update its value; wouldn't it change if I use div.data('myval',20) ? Do I need to use div.attr('data-myval','20') only?
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How do I create test and train samples from one dataframe with pandas?
... would just use numpy's randn:
In [11]: df = pd.DataFrame(np.random.randn(100, 2))
In [12]: msk = np.random.rand(len(df)) < 0.8
In [13]: train = df[msk]
In [14]: test = df[~msk]
And just to see this has worked:
In [15]: len(test)
Out[15]: 21
In [16]: len(train)
Out[16]: 79
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#ifdef replacement in the Swift language
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1091
Yes you can do it.
In Swift you can still use the "#if/#else/#endif" preprocessor macros (al...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...owLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
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Canary release strategy vs. Blue/Green
...ve Schweisguth
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Why does changing 0.1f to 0 slow down performance by 10x?
...trap and resolve them using microcode.
If you print out the numbers after 10,000 iterations, you will see that they have converged to different values depending on whether 0 or 0.1 is used.
Here's the test code compiled on x64:
int main() {
double start = omp_get_wtime();
const float x[...