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Does Python optimize tail recursion?
...ons.
The clean way: modifying the Y combinator
The Y combinator is well known; it allows to use lambda functions in a recursive
manner, but it doesn't allow by itself to embed recursive calls in a loop. Lambda
calculus alone can't do such a thing. A slight change in the Y combinator however
can pr...
Finding the index of an item in a list
...ist in order, until it finds a match. If your list is long, and you don't know roughly where in the list it occurs, this search could become a bottleneck. In that case, you should consider a different data structure. Note that if you know roughly where to find the match, you can give index a hint. F...
ElasticSearch: Unassigned Shards, how to fix?
...ate" command has changed to provide more options - the example above would now be "allocate_empty_primary", omitting the "allow_primary" parameter.
– jmb
May 8 '17 at 14:58
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What are some (concrete) use-cases for metaclasses?
...Having said that, Python 3.6 introduced the much simpler init_subclass, so now you can manipulate subclasses in a baseclass, and no longer need a metaclass for that purpose.
– Dan Gittik
Jun 10 '18 at 20:38
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How to unit test a Node.js module that requires other modules and how to mock the global require fun
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You can now!
I published proxyquire which will take care of overriding the global require inside your module while you are testing it.
This means you need no changes to your code in order to inject mocks for required modules.
Prox...
mysql_config not found when installing mysqldb python interface
...oo on openSUSE, where "libmysqlclient-dev" becomes "libmysqlclient-devel". Now the pip package installs fine. Thanks.
– pbarill
Nov 30 '13 at 4:14
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What's the difference between the atomic and nonatomic attributes?
.../nonatomic/retain/assign/copy are merely advisory. (Note: @synthesize is now the default behavior in recent versions of LLVM. There is also no need to declare instance variables; they will be synthesized automatically, too, and will have an _ prepended to their name to prevent accidental direct ...
Installing Python packages from local file system folder to virtualenv with pip
...default answer. No need to make pip hunt around with --find-links if you know exactly where your package is on the local machine.
– Robert
Feb 10 at 19:33
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How do you test functions and closures for equality?
...as kind of devastating because I had been storing closures in an Array and now can't remove them with indexOf({$0 == closure} so I have to refactor. IMHO optimization shouldn't influence language design, so without a quick fix like the now deprecated @objc_block in matt's answer, I would argue that...
How to get notified about changes of the history via history.pushState?
So now that HTML5 introduces history.pushState to change the browsers history, websites start using this in combination with Ajax instead of changing the fragment identifier of the URL.
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