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Is there a NumPy function to return the first index of something in an array?
...st element. Note also that where and nonzero return arrays, so you need to select the first element to get the index.
In [71]: np.argmax(a==2)
Out[71]: 2
In [72]: np.where(a==2)
Out[72]: (array([2], dtype=int64),)
In [73]: np.nonzero(a==2)
Out[73]: (array([2], dtype=int64),)
Time comparison
Ju...
How to grep for two words existing on the same line? [duplicate]
...if performance really matters. If you run two commands, you should aim to select the less frequently occurring word in the first grep to minimize the amount of data processed by the second.
Diagnosis
The initial script is:
grep -c "word1" | grep -r "word2" logs
This is an odd command sequence....
How do you sort an array on multiple columns?
...lso sort the second attribute. Unless you loop it as many as the number of selected columns.. Am I right? e.g. [[A, 10], [J, 15], [A, 5], [J, 5]] => [[A, 10], [A, 5], [J, 15], [J, 5]]
– Bla...
Apr 23 '15 at 2:30
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Simple way to find if two different lists contain exactly the same elements?
...) because we are doing O(2*n) insertions into a hashmap and O(3*n) hashmap selects. I have not fully tested this code, so beware :)
//Returns true:
listsAreEquivelent(Arrays.asList("A","A","B"),Arrays.asList("B","A","A"));
listsAreEquivelent(null,null);
//Returns false:
listsAreEquivelent(Arrays.as...
XML parsing of a variable string in JavaScript
...at JQuery does not support XML namespaces. See zachleat.com/web/2008/05/10/selecting-xml-with-javascript
– mikemaccana
Jan 24 '11 at 14:58
10
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How can I update NodeJS and NPM to the next versions?
...0.9.6
Where the dot (•) means that it's a currently active version. To select another node.js version from the list, use Up/Down arrow keys and activate using the Enter key.
To list the versions available to install:
$ n lsr
nvm (macOS, Linux)
nvm is also like rvm, even the command names an...
How to vertically center content with variable height within a div?
...
Using the child selector, I've taken Fadi's incredible answer above and boiled it down to just one CSS rule that I can apply. Now all I have to do is add the contentCentered class name to elements I want to center:
.contentCentered {
...
How can I time a code segment for testing performance with Pythons timeit?
...
Rather than select a clock by hand, use timeit.default_timer; Python has already done the work for you. But really, you should use timeit.timeit(myfast, number=n) instead of re-inventing the repetitive call wheel (and miss the fact that ...
How to use localization in C#
...ings.resx") by doing the following: Right-click Properties in the project, select Add -> New Item... in the context menu, then in the list of Visual C# Items pick "Resources file" and name it strings.resx.
Add a string resouce in the resx file and give it a good name (example: name it "Hello" wit...
How can I access Google Sheet spreadsheets only with Javascript?
... it when the sheet is opened, or when a menu item (that you can define) is selected.
Here's a Quickstart/Demo. The code looks like this:
// Let's say you have a sheet of First, Last, email and you want to return the email of the
// row the user has placed the cursor on.
function getActiveEmail() {...