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What Does 'Then' Really Mean in CasperJS
... Isn't the so called 'stack' actually a queue? The steps are executed in order, had it been a stack wouldn't we expect step 3, step 2, step 1?
– Reut Sharabani
Oct 20 '13 at 16:09
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Trying to fire the onload event on script tag
I'm trying to load a set of scripts in order, but the onload event isn't firing for me.
1 Answer
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How to count occurrences of a column value efficiently in SQL?
...Microsoft SQL (i.e 2000)
SELECT age, count(*)
FROM Students
GROUP by age
ORDER BY age
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Reordering of commits
...the base. Git will present you with a list of the commits in this range. Reorder them and tell git to squash the appropriate ones:
pick c ...
pick a ...
squash d ...
squash e ...
squash g ...
pick b
squash f
Now the history should look like this:
c - [a+d+e+g] - [b+f] (branchA)
/
--o-x-x-...
C++ SpinLock 自旋锁的代码实现（全网最简略的方式） - C/C++ - 清泛网 - ...
...) {}
virtual ~SpinLock() {}
void lock() { while(f_.test_and_set(memory_order_acquire)); }
void unlock() { f_.clear(memory_order_release); }
};
2、有退避策略的自旋锁，尝试一定次数(65535)失败后让出线程调度权：
class SpinLockWithYield {
atomic_flag f_;
public...
MySQL offset infinite rows
...ch I agree with, but only to a point. Let's say you're returning a list of orders to a customer. It's perfectly reasonable to never return more than, say, a million at a time, but limiting to 100 might cause confusion.
– Autumn Leonard
Aug 3 '18 at 20:15
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Index on multiple columns in Ruby on Rails
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The order does matter in indexing.
Put the most selective field first, i.e. the field that narrows down the number of rows fastest.
The index will only be used insofar as you use its columns in sequence starting at the beginnin...
PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
...ever, you could try doing this:
iconv(mb_detect_encoding($text, mb_detect_order(), true), "UTF-8", $text);
Setting it to strict might help you get a better result.
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WebRTC vs Websockets: If WebRTC can do Video, Audio, and Data, why do I need Websockets? [closed]
...t that (I believe) WebRTC can be configured to be less strict about packet order and stuff, so it can be much faster is you don't mind some packet loss etc (i.e. having the latest data is more important than having all the data): stackoverflow.com/a/13051771/993683
– user993683...
How do I migrate a model out of one django app and into a new one?
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In order to access orm['contenttypes.contenttype'], you also need to add the --freeze contenttypes option to your schemamigration commands.
– Gary
Dec 5 '13 at 18:21
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