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Why is lazy evaluation useful?
...n a similar way to a list comprehension): python.org/doc/2.5.2/ref/genexpr.html
– John Montgomery
Nov 5 '08 at 15:11
24
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What's the difference between HEAD^ and HEAD~ in Git?
...d" if $?;
# for browsing history - http://blog.kfish.org/2010/04/git-lola.html
system "git config alias.lol 'log --graph --decorate --pretty=oneline --abbrev-commit'";
system "git config alias.lola 'log --graph --decorate --pretty=oneline --abbrev-commit --all'";
It adds aliases in the new throwa...
What is the most efficient way to deep clone an object in JavaScript?
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Structured Cloning
The HTML standard includes an internal structured cloning/serialization algorithm that can create deep clones of objects. It is still limited to certain built-in types, but in addition to the few types supported by JSON it also s...
Equivalent C++ to Python generator pattern
...ntation is available in Boost boost.org/doc/libs/1_57_0/libs/coroutine/doc/html/index.html with a proposal for standardization here: open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3985.pdf
– boycy
Jan 13 '15 at 17:00
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Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... bits and pieces of IOStreams history: www2.research.att.com/~bs/01chinese.html (this link seems to be temporarily broken right now, but you can try Google's page cache)
– stakx - no longer contributing
May 2 '10 at 11:48
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Use CSS3 transitions with gradient backgrounds
....
Update
http://codersblock.blogspot.fr/2013/12/gradient-animation-trick.html?showComment=1390287622614
Here is a quick example:
Link state
.btn {
font-family: "Helvetica Neue", Arial, sans-serif;
font-size: 12px;
font-weight: 300;
position: relative;
display: inline-block;
text-de...
How to create a density plot in matplotlib?
...and more examples: mail.scipy.org/pipermail/scipy-user/2010-January/023877.html and there is an enhancement ticket at projects.scipy.org/scipy/ticket/1092 . Note, gaussian_kde is designed for n-dimensional data.
– Josef
Nov 11 '10 at 14:53
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
....
Interesting read: http://kore-nordmann.de/blog/php_charset_encoding_FAQ.html#how-do-i-determine-the-charset-encoding-of-a-string
There are other ways of ensuring the correct charset though. Concerning forms, try to enforce UTF-8 as much as possible (check out snowman to make sure yout submission...
Why does z-index not work?
...in the stacking order of the parent's stacking context.
So with following html
div { border: 2px solid #000; width: 100px; height: 30px; margin: 10px; position: relative; background-color: #FFF; }
#el3 { background-color: #F0F; width: 100px; height: 60px; top: -50px; }
<div id="el1" style...
Rails formatting date
...he string representation of the date. (http://ruby-doc.org/core-2.2.1/Time.html#method-i-strftime).
From APIdock:
%Y%m%d => 20071119 Calendar date (basic)
%F => 2007-11-19 Calendar date (extended)
%Y-%m => 2007-11 ...