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What is the scope of variables in JavaScript?
...passed the point of declaration in the source code. The interim period is known as the temporal dead zone.
function f() {
function g() {
console.log(x)
}
let x = 1
g()
}
f() // 1 because x is hoisted even though declared with `let`!
Function parameter names
Function...
Releasing memory in Python
...ere a way to force Python to release all the memory that was used (if you know you won't be using that much memory again)?
No, there is not. But there is an easy workaround: child processes.
If you need 500MB of temporary storage for 5 minutes, but after that you need to run for another 2 hours a...
git-svn not a git command?
...
git svn is certainly bundled with Git now on Windows :)
– Tod Thomson
Dec 13 '13 at 0:50
1
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Iterator invalidation rules
...m not sure how the rehashing part could be mapped on insert/erase, do you know of a way to check whether a rehash will be triggered or not ?
– Matthieu M.
Jun 22 '11 at 10:33
1
...
Is there a Pattern Matching Utility like GREP in Windows?
...e tools requires more work. That being said, findstr is my tool of choice now when using others' computers, but I have to refresh my memory on syntax every time I use it.
– sage
Apr 2 '14 at 19:57
...
Why is auto_ptr being deprecated?
...f assignments supported by auto_ptr
copy assignment (4) culprit
Now coming to the reason WHY the copy assignment itself was so disliked, I have this theory :
Not all programmers read books or standards
auto_ptr on the face of it, promises you ownership of the object
the little-* (pun in...
Where do you store your salt strings?
...g the calculations for brute-forcing the hash), thus the argument that by knowing the salt someone could "generate a rainbow table" is spurious.
There's no real point in storing salts in a separate file as long as they're on a per-user basis - the point of the salt is simply to make it so that one ...
When to use static vs instantiated classes
...imic the JavaScript prototype object in PHP 5.3) static members is when I know that the respective field will have the same value cross-instance. At that point you can use a static property and maybe a pair of static getter/setter methods. Anyway, don't forget to add possibility for overriding the s...
What does “fragment” mean in ANTLR?
...with you that this is a meaningful example but (imo) only for who already knows what the fragment keyword means. I find it somewhat misleading for someone who is trying to figure out the correct use of fragments for the first time.
– BlackBrain
Dec 6 '18 at 17:...
What is the most ridiculous pessimization you've seen? [closed]
We all know that premature optimization is the root of all evil because it leads to unreadable/unmaintainable code. Even worse is pessimization, when someone implements an "optimization" because they think it will be faster, but it ends up being slower, as well as being buggy, unmaintainable, etc...