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How to toggle a value in Python
... A else A
>>> x
[4, 5, 6]
Solution using itertools
If you have more than two values, the itertools.cycle() function provides a generic fast way to toggle between successive values:
>>> import itertools
>>> toggle = itertools.cycle(['red', 'green', 'blue']).next
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git --git-dir not working as expected
... --git-dir=/mycode/.git --work-tree=/mycode status
You can read a little more here
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Retina displays, high-res background images
...t;
background-size: 200px 200px;
}
}
EDIT
To add a little more to this answer, here is the retina detection query I tend to use:
@media
only screen and (-webkit-min-device-pixel-ratio: 2),
only screen and ( min--moz-device-pixel-ratio: 2),
only screen and ( -o-min-device-pixe...
How to clear MemoryCache?
...-- including all of the answers above that use LINQ queries.
A better and more flexible solution
Here's an efficient way of clearing the cache that simply builds on the existing change monitoring infrastructure. It also provides the flexibility to clear either the entire cache or just a named sub...
Android studio: new project vs new module
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Creating a new project in Android does not looks more like an app with manifest / res / and src - as apposed to a "workspace". When creating a Module, two o the types offered are 1) application module and 2) android library module. #1 seems redundant to "new project"...
Why use Abstract Base Classes in Python?
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Simple logical operators in Bash
... ] single brackets are an alternate form of conditional expressions with more quirks (but older and more portable). Don't write any for now; start worrying about them when you find scripts that contain them.
This is the idiomatic way to write your test in bash:
if [[ $varA == 1 && ($varB ...
Eclipse shortcut “go to line + column”
...n according to my knowledge.
On OSX, the shortcut is ⌘ + L
It you want more short-cuts, refer http://www.shortcutworld.com/en/win/Eclipse.html
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How are ssl certificates verified?
... will be used to encrypt the HTTP traffic on this connection; this is much more efficient than using public/private key encryption for everything. Your browser encrypts the symmetric key with the public key of the web server then sends it back, thus ensuring that only the web server can decrypt it,...
Performance of static methods vs instance methods
...re is an overall rule of playing nicely with compiler optimisations - it's more likely that someone went to the effort of optimising cases that come up with normal use than those which come up with strange use.
Number 2. Makes no difference. There's a certain amount of per-class cost for each membe...