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Rails: How does the respond_to block work?
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No kidding. If you already know how to code, rails might not be for you :-P
– Limited Atonement
Sep 15 at 15:46
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Why is lazy evaluation useful?
...ort (filter (< x) xs) ++ [x] ++ quickSort (filter (>= x) xs)
If we now want to find the minimum of the list, we can define
minimum ls = head (quickSort ls)
Which first sorts the list and then takes the first element of the list. However, because of lazy evaluation, only the head gets comp...
Python - When to use file vs open
...he moment. They've had a sort of strange relationship, but file() is going now, so there's no need to worry anymore.
The following is from the Python 2.6 docs. [bracket stuff] added by me.
When opening a file, it’s preferable to use open() instead of invoking this [file()] constructor directl...
Command-line Tool to find Java Heap Size and Memory Used (Linux)?
...on you should do it within code or you can use jconsole. This is what I know there should also be many other ways.
– padippist
Jan 18 '17 at 6:47
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Final arguments in interface methods - what's the point?
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The Java 8 language spec now says that there are eight kinds of variables (up from seven--they added lambda parameters). Method parameters are still fourth on the list (at least some things in life seem stable. :-)).
– Ted Hopp
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Getting started with F# [closed]
...on about using F# within MonoDevelop here. The F# compiler and fsi.exe are now part of the Mono distribution.
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Operational Transformation library?
...ript implementation of its collaborative editing algorithm called ShareJS, now named ShareDB.
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valueOf() vs. toString() in Javascript
...d no hint, meaning conversion to string will occur, one of the operands is now a string, String(1) + String({}), `1[object Object]`
[] + [] // '' Two objects, `ToPrimitive` passed no hint, String([]) + String([]), '' (empty string)
1 - 'a' // NaN Both are primitives, one is a string, `T...
Untrack files from git temporarily
.... When I initialized git, I added pre-compiled libs and binaries. However, now during my development I don't want to check in those files intermittently. I dont want to remove these files from repo. Is there any way to not keep a track of these files till I complete my development. (I think I can no...
PHP 5: const vs static
...s 10
echo ClassName::MY_CONST; // returns 5
ClassName::$my_var = 20; // now equals 20
ClassName::MY_CONST = 20; // error! won't work.
Public, protected, and private are irrelevant in terms of consts (which are always public); they are only useful for class variables, including static variable....