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Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
... documentation for Range† says this:
Ranges constructed using .. run from the beginning to the end inclusively. Those created using ... exclude the end value.
So a..b is like a <= x <= b, whereas a...b is like a <= x < b.
Note that, while to_a on a Range of integers gives a co...
Shortcut to open file in Vim
...tofill. Invoke a keyboard shortcut, type the file name/pattern, and choose from all the matching files names.
19 Answers
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DISABLE the Horizontal Scroll [closed]
Ok for some reason my webpage scrolls from left to right and shows a lot of ugly space.
12 Answers
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ARC and bridged cast
...Release Notes, under the section "The Compiler Handles CF Objects Returned From Cocoa Methods", it is indicated that using a method like -CGColor which returns a Core Foundation object will automatically be handled properly by the compiler.
Thus, they suggest using code like the following:
CAGrad...
best way to preserve numpy arrays on disk
...
From my experiences, hdf5 performances very slow reading and writing with chunk storage and compression enabled. For example, I've two 2-D arrays with shape (2500,000 * 2000) with chunk size (10,000 * 2000). A single write op...
Shell script to delete directories older than n days
... the directory; the {} part is where the find result gets substituted into from the previous part.
Alternatively, use:
find /path/to/base/dir/* -type d -ctime +10 | xargs rm -rf
Which is a bit more efficient, because it amounts to:
rm -rf dir1 dir2 dir3 ...
as opposed to:
rm -rf dir1; rm ...
How to uglify output with Browserify in Gulp?
...gives streaming vinyl file object
.pipe(buffer()) // <----- convert from streaming to buffered vinyl file object
.pipe(uglify()) // now gulp-uglify works
.pipe(gulp.dest('./build/scripts'));
});
Or, you can choose to use vinyl-transform instead which takes care of both streaming an...
Remove property for all objects in array
I want to remove the bad property from every object in the array. Is there a better way to do it than using a for loop and deleting it from every object?
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Test if lists share any items in python
...ection method have to allocate new memory for the intermediary variables:
from timeit import timeit
>>> timeit('bool(set(a) & set(b))', setup="a=list(range(1000));b=list(range(1000))", number=100000)
26.077727576019242
>>> timeit('any(i in a for i in b)', setup="a=list(range(1...
Rounding float in Ruby
...s a number, not a string. There is no way that the number 2.3 is different from 2.30, so there is no way to have an option to preserve trailing zeros. You could make your own class of numbers_with_significance but then we already have strings.
– Roobie Nuby
Apr...