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Why are variables “i” and “j” used for counters?
... for summation and matrix multiplication indices and what-not. I remember reading in an early Fortran II manual something about that. (Yes, Fortran II.)
– S.Lott
Nov 9 '10 at 19:51
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Can't use method return value in write context
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Because convenience functions can be a pain to read in someone else's code. Plus, in a MVC/HMVC architecture it can mess your structure. At the end of the day, PHP coders should know it's limitations and be able to understand small workarounds without convenience function...
Entity Framework - Code First - Can't Store List
...it will turn a single entry into multiple entries but it is the easiest to read and most concise.
The problem with CAD bloke's answer is that it is ugly and requires the model to be altered which is a bad design practice (see Marcell Toth's comment on Sasan's answer). But it is the only answer that...
cartesian product in pandas
... merge, and finally drop the column on the result? Creating, as opposed to reading, data with pandas is just a pain
– Bananach
Oct 10 '19 at 7:31
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:active pseudo-class doesn't work in mobile safari
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For any future readers, I've posted a demo here: http://jsbin.com/EjiWILe/3/. Check the functionality on your iOS device.
– mhulse
Dec 19 '13 at 20:58
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Renaming a branch in GitHub
...set local branch to track the new remote
If you need step-by-step you can read this great article:
How to Rename Git Local and Remote Branches
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When is it better to use an NSSet over an NSArray?
...re are other, e.g. Queue, Stack, Heap, Fibonacci's Heap. I would recommend reading a book about algorithms and data structures.
See wikipedia for more information.
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How to exit in Node.js
...t you want:
$ node
> .exit
$
It's documented in the REPL docs. REPL (Read-Eval-Print-Loop) is what the Node command line is called.
From a normal program, use process.exit([code]).
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im...
Can't find a “not equal” css attribute selector
...an select the first one using
[foo = 'x']{
background:red;
}
FIDDLE
Read this
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Create PostgreSQL ROLE (user) if it doesn't exist
...t to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answers
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