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Why do we check up to the square root of a prime number to determine if it is prime?
...it doesn't hurt (except for sometimes an additional division) to check one more divisor, you can just calculate ceil(sqrt(n)).
– gnasher729
Aug 3 at 9:28
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how to write setTimeout with params by Coffeescript
...you doing setting thousands of timeouts per second, anyway?)
Of course, a more straightforward approach is to simply name your callback, which tends to produce more readable code anyway (jashkenas is a big fan of this idiom):
callback = -> something param
setTimeout callback, 1000
...
Setting up a git remote origin
...
Because deploying often mean (read "always") more than just what git pull do. You might need to setup the production DB credentials, clear the cache, increase the version number, backup the older version so you can roll back if things go wrong, optimized/minify your ass...
What do REFRESH and MERGE mean in terms of databases?
... refreshed.
MERGE means something complex that approximates "save" but is more like "push this detached entity back into managed status and save its state changes"; the cascading means that all associated entities get pushed back the same way, and the managed-entity handle you get back from .merge(...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
..., 3}.reduceLeft(_ + _) // invalid, A* vararg parameter
However, there’s more you need to know to better grasp these rules.
Increased compile checking with parens
The authors of Spray recommend round parens because they give increased compile checking. This is especially important for DSLs like S...
In laymans terms, what does 'static' mean in Java? [duplicate]
...ether the use of the keyword is a bad idea or not. That can be covered in more detail in other questions such as Is using a lot of static methods a bad thing?
There are also a few less common uses of the keyword static. There are static imports which allow you to use static types (including inte...
What is the difference between `git fetch origin` and `git remote update origin`?
... those with remote.<name>.skipDefaultUpdate set), but not any of the more specific options of fetch. Under the hood, though, it does the exact same thing as fetch with the default options.
The answer recommending remote update instead of git fetch was actually recommending it without a remot...
Regex for string contains?
...idn't explain the code. If you do explain it (in your answer), you are far more likely to get more upvotes—and the questioner actually learns something!
– The Guy with The Hat
Jul 22 '14 at 16:07
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How do I pass JavaScript variables to PHP?
...t;'; //between <option></option> tags you can output something more human-friendly (like $row['name'], if table "salaried" have one)
}
?>
</select>
<?php endif ?>
</p>
<p>
<input type="submit" value="...