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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
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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...
Regular expression to match any character being repeated more than 10 times
...
In Python you can use (.)\1{9,}
(.) makes group from one char (any char)
\1{9,} matches nine or more characters from 1st group
example:
txt = """1. aaaaaaaaaaaaaaa
2. bb
3. cccccccccccccccccccc
4. dd
5. eeeeeeeeeeee"""
rx = re.compile(r'(.)\1{9,}')
lines = txt.split('\n...
How to get the element clicked (for the whole document)?
...arget.tagName); // to get the element tag name alone
}
to get the text from clicked element
window.onclick = e => {
console.log(e.target.innerText);
}
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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...
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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Ask for User Permission to Receive UILocalNotifications in iOS 8
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Since iOS 8 you need to ask user's permission to show notifications from your app, this applies for both remote/push and local notifications. In Swift you can do it like this,
Update for Swift 2.0
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDi...