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Stop an input field in a form from being submitted
...l, I didn't know that. Does this work on all browsers? Is it part of a standard, or is it an implementation quirk?
– BlairHippo
Jun 9 '10 at 17:12
2
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Get GPS location from the web browser
...een discussed in Is it possible to detect a mobile browser's GPS location? and Get position data from mobile browser. You can find more information there.
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Mean per group in a data.frame [duplicate]
I have a data.frame and I need to calculate the mean per group (i.e. per Month , below).
8 Answers
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How to get different colored lines for different plots in a single figure?
...x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.show()
And, as you may already know, you can easily add a legend:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.plot(x, x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.legend(['y = x', ...
How to assign a heredoc value to a variable in Bash?
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You can avoid a useless use of cat and handle mismatched quotes better with this:
$ read -r -d '' VAR <<'EOF'
abc'asdf"
$(dont-execute-this)
foo"bar"''
EOF
If you don't quote the variable when you echo it, newlines are lost. Quoting it preserves them:...
How to read a local text file?
...le text file reader by creating a function that takes in the file’s path and converts each line of text into a char array, but it’s not working.
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Determine the data types of a data frame's columns
I'm using R and have loaded data into a dataframe using read.csv() . How do I determine the data type of each column in the data frame?
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How to check if bootstrap modal is open, so i can use jquery validate
i need to make a validation only if a modal is open, because if i open it, and then i close it, and the i press the button that opens the modal it doesn't work because it is making the jquery validation, but not showing because the modal was dismissed.
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How to replace all occurrences of a string?
...n(replacement)
This used to be faster in some cases than using replaceAll and a regular expression, but that doesn't seem to be the case anymore in modern browsers.
Benchmark: https://jsperf.com/replace-all-vs-split-join
Conclusion: If you have a performance critical use case (e.g processing hundre...
T-SQL get SELECTed value of stored procedure
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there are three ways you can use: the RETURN value, and OUTPUT parameter and a result set
ALSO, watch out if you use the pattern: SELECT @Variable=column FROM table ...
if there are multiple rows returned from the query, your @Variable will only contain the value from the l...