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How to sort a list in Scala by two fields?
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Scala, under the hood of sortBy method uses java.util.Arrays.sort, which for array of objects guarantees to be stable. So, yes, this solution is correct. (This was checked in Scala 2.10)
– Marcin Pieciukiewicz
Jun 28 '13 at 12:44
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Reference — What does this symbol mean in PHP?
... @AcidShout $a - $b works for numbers, but not strings, objects, or arrays.
– mcrumley
Sep 25 '15 at 18:29
49
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Resize image in PHP
...MP, IMAGETYPE_WEBP];
$type = exif_imagetype ($imagePath);
if (!in_array ($type, $types)) {
return null;
}
list ($width, $height) = getimagesize ($imagePath);
$outBool = in_array ($outExt, ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp']);
switch ($type) {
case...
T-SQL stored procedure that accepts multiple Id values
...aintained the authoritative answer to this question for the last 16 years: Arrays and Lists in SQL Server.
There are at least a dozen ways to pass an array or list to a query; each has their own unique pros and cons.
Table-Valued Parameters. SQL Server 2008 and higher only, and probably the clos...
Add directives from directive in AngularJS
...eeps the directive clean with no hard-coded logic.
The directive takes an array of objects, each object contains the name of the directive to be added and the value to pass to it (if any).
I was struggling to think of a use-case for a directive like this until I thought that it might be useful to ...
What does the restrict keyword mean in C++?
... was even clearer than the wiki article: 4 instructions vs 3 instructions.
Arrays
So far we have single instruction savings, but if pointer represent arrays to be looped over, a common use case, then a bunch of instructions could be saved, as mentioned by supercat and michael.
Consider for example:
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How to debug Ruby scripts [closed]
... magnifying glass near the top right corner, choose the include? which has Array underneath it (if you don't know what class [1, 2, 3] is, type [1, 2, 3].class in irb), and you get to include? (Array), which describes what it does.
However, if the documentation doesn't help, you're more likely to g...
Automatically plot different colored lines
...NOT needed, 'Color' NOT needed. Yay!
APPENDIX
To get the ColorOrder RGB array used for the current axis,
get(gca,'ColorOrder')
To get the default ColorOrder for new axes,
get(0,'DefaultAxesColorOrder')
Example of setting new global ColorOrder with 10 colors on MATLAB start, in startup.m:
s...
Reading binary file and looping over each byte
...ime and if you need performance.
mmap allows you to treat a file as a bytearray and a file object simultaneously. It can serve as an alternative to loading the whole file in memory if you need access both interfaces. In particular, you can iterate one byte at a time over a memory-mapped file just u...
How to display unique records from a has_many through relationship?
... In Rails 5.1, I kept getting undefined method 'except' for #<Array... and it was because I used .uniq instead of .distinct
– stevenspiel
Jan 26 '18 at 21:53
add ...