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Why is @autoreleasepool still needed with ARC?
... then you'd be releasing 100000000 objects later on rather than 10000 each time round the outer for-loop.
Update:
Also see this answer - https://stackoverflow.com/a/7950636/1068248 - for why @autoreleasepool is nothing to do with ARC.
Update:
I took a look into the internals of what's going on her...
How to use sed to replace only the first occurrence in a file?
...pression #1, char 0: no previous regular expression (GNU), because, at the time the 1st line is being processed (due to line number 1 starting the range), no regex has been applied yet, so // doesn't refer to anything.
With the exception of GNU sed's special 0,/re/ syntax, any range that starts with...
How to define hash tables in Bash?
...re to another list of keys, instead of O(n) with proper hashmaps (constant time lookup, O(1) for a single key).
– CodeManX
Aug 23 '15 at 19:01
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How can I parse a YAML file from a Linux shell script?
...r my use case, since it answered the question better than any other at the time. This can definitely be expanded.
– Curtis Blackwell
Nov 27 '13 at 13:37
3
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Find a pair of elements from an array whose sum equals a given number
...y element into a hash table (without sorting). This takes O(n) as constant time insertion.
Then for every x,
we can just look up its complement, T-x, which is O(1).
Overall the run time of this approach is O(n).
You can refer more here.Thanks.
...
How to get a password from a shell script without echoing
...s] [-a array] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...]
Read a line from the standard input and split it into fields.
...
-p prompt output the string PROMPT without a trailing newline before
attempting to read
...
-s d...
What does “not run” mean in R help pages?
Sometimes on an R help page the phrase "not run" appears in comments. Check out this from the help page for "with()":
5 Ans...
What is your favorite C programming trick? [closed]
...
I sometimes extend this to: const struct something zero_something = { 0 }; and then I can reset a variable on the fly with struct something X = zero_something; or part-way through a routine I can use 'X = zero_something;'. The onl...
TortoiseGit save user authentication / credentials
...edential Manager, the successor of git-credential-winstore)
For the first time you sync you are asked for user and password, you enter them and they will be saved to Windows credential store. It won't ask for user or password the next time you sync.
To use: Right click → TortoiseGit → Settings...
Confused about Service vs Factory
... to it. And that a factory was a singleton that returned a new object each time. That is, a service would give you one "car" and everything in your project would use this car. While a factory would give you a new car each time you invoked the factory. One was a singleton that returned a singleton an...