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Javascript Reduce an empty array
..., currentValue){
return Number(previousValue) + Number(currentValue);
}, 0);
or using ES6:
[].reduce( (previousValue, currentValue) => previousValue + currentValue, 0);
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How does git compute file hashes?
... human-readable integer), followed by a NUL character
$ echo -e 'blob 14\0Hello, World!' | shasum
8ab686eafeb1f44702738c8b0f24f2567c36da6d
Source: http://alblue.bandlem.com/2011/08/git-tip-of-week-objects.html
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ValueError: numpy.dtype has the wrong size, try recompiling
...ABI backward compatibility. This happened (unintentionally) with numpy 1.4.0.
As a consequence, users that updated numpy to 1.4.0, had binary incompatibilities with all other compiled packages, that were compiled against a previous version of numpy. This requires that all packages with binary extens...
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Tom DevTom Dev
2,92011 gold badge1010 silver badges66 bronze badges
add a commen...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
... and I want to add two new columns to a dataframe df with n columns (n > 0).
These new columns result from the application of a function to one of the columns in the dataframe.
...
How does Python 2 compare string and int? Why do lists compare as greater than numbers, and tuples g
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209
From the python 2 manual:
CPython implementation detail: Objects of different types except ...
How to center horizontally div inside parent div
...sides to automatically fit. This centers the div.
div#child {
margin: 0 auto;
}
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Setting custom UITableViewCells height
...
502
Your UITableViewDelegate should implement tableView:heightForRowAtIndexPath:
Objective-C
- (C...
Resize Google Maps marker icon image
...
If the original size is 100 x 100 and you want to scale it to 50 x 50, use scaledSize instead of Size.
var icon = {
url: "../res/sit_marron.png", // url
scaledSize: new google.maps.Size(50, 50), // scaled size
origin: new google.maps.Poi...
How to express infinity in Ruby?
...y 1.8.6, 1.8.7, and 1.9.2 you have Float.infinite?.
PositiveInfinity = +1.0/0.0
=> Infinity
NegativeInfinity = -1.0/0.0
=> -Infinity
CompleteInfinity = NegativeInfinity..PositiveInfinity
=> -Infinity..Infinity
*I've verified this in Ruby 1.8.6 and 1.9.2
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