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Why is the shovel operator (
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Proof:
a = 'foo'
a.object_id #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b...
What is the Difference Between read() and recv() , and Between send() and write()?
...send out-of-band messages...).
Functions read()/write() are the universal file descriptor functions working on all descriptors.
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Javascript - sort array based on another array
...oduct1, product2) => { const index1 = manualSort.indexOf(product1.id); const index2 = manualSort.indexOf(product2.id); return ( (index1 > -1 ? index1 : Infinity) - (index2 > -1 ? index2 : Infinity) ); });
– Freshollie
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Is there a way to list pip dependencies/requirements?
...--no-binary :all: -v
-d tells pip the directory that download should put files in.
Better, just use this script with the argument being the package name to get only the dependencies as output:
#!/bin/sh
PACKAGE=$1
pip download $PACKAGE -d /tmp --no-binary :all:-v 2>&1 \
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Always pass weak reference of self into block in ARC?
... This isn't a problem, for example:
[myArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop){
[self doSomethingWithObject:obj];
}];
The block retains self, but self doesn't retain the block. If one or the other is released, no cycle is created and everything gets deallocated a...
jQuery find events handlers registered with an object
...ent of a button. In the Chrome console it showed handler: function () { inside the click property. I had to double click on the function part for it to expand and show the full contents of the function.
– Jim
Feb 9 '15 at 10:34
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How can I color Python logging output?
... FORMAT = "[$BOLD%(name)-20s$RESET][%(levelname)-18s] %(message)s ($BOLD%(filename)s$RESET:%(lineno)d)"
COLOR_FORMAT = formatter_message(FORMAT, True)
def __init__(self, name):
logging.Logger.__init__(self, name, logging.DEBUG)
color_formatter = ColoredForma...
How to build a framework or library for other developers, the secure way? [closed]
...drag the .framework bundle into Xcode. They will be able to see the header files you copy into the bundle (see the articles above), but not the source (as it's not included -- only the compiled output is in the bundle).
This can also be a great way to distribute code that is used for multiple projec...
When to use a key/value store such as Redis instead/along side of a SQL database?
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I did a quick Google search with that tutorial site URL and came across this as a top hit - slideshare.net/dvirsky/introduction-to-redis-version-2
– Paul
Nov 19 '13 at 15:19
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How to quit a java app from within the program
...or.
Also, as others have mentioned, clean up first! That involves closing files and other open resources.
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