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String literals: Where do they go?
I am interested in where string literals get allocated/stored.
8 Answers
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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...释器居然不到200k，这是多么地变态啊（/bin/sh都要1M，MacOS平台），而且能和C语言非常好的互动。我很好奇得浏览了一下Lua解释器的源码，这可能是我看过最干净的C的源码了。我不想写一篇大而全的语言手册，一方面是因为已经...
When should we use mutex and when should we use semaphore
... to sleep till you release the mutex.
Spinlock:
Use a spinlock when you really want to use a mutex but your thread is not allowed to sleep.
e.g.: An interrupt handler within OS kernel must never sleep. If it does the system will freeze / crash. If you need to insert a node to globally shared linke...
How do I prevent Android taking a screenshot when my app goes to the background?
...ar overflow, etc. — will be insecure. You can fix the Dialog problem by calling getWindow() on it and setting FLAG_SECURE. The rest... gets tricky. See this blog post for more.
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sed whole word search and replace
...rying to remove a 7 at the start of a word in my code. This link, specifically, J-P's solution, led me to the answer: stackoverflow.com/questions/3864467/… (couldn't get markdown to embed it like yours for some reason).
– jimh
Mar 29 '17 at 23:46
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Multiprocessing - Pipe vs Queue
... as a bonus; JoinableQueue() accounts for tasks when queue.task_done() is called (it doesn't even know about the specific task, it just counts unfinished tasks in the queue), so that queue.join() knows the work is finished.
The code for each at bottom of this answer...
mpenning@mpenning-T61:~$ pyt...
How do I choose between Semaphore and SemaphoreSlim?
...uld be used when "wait times are expected to be very short". That would usually dovetail nicely with the idea that the slim version is more lightweight for most of the trade offs.
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Postgres - FATAL: database files are incompatible with server
...an run the below command to upgrade your postgres data directory retaining all data:
brew postgresql-upgrade-database
The above command is taken from the output of brew info postgres
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Should you commit .gitignore into the Git repos?
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Normally yes, .gitignore is useful for everyone who wants to work with the repository. On occasion you'll want to ignore more private things (maybe you often create LOG or something. In those cases you probably don't want to for...
Find JavaScript function definition in Chrome
...ft + F, or macOS:
cmd + optn + F. This opens a window for searching across all scripts.
check "Regular expression" checkbox,
search for foo\s*=\s*function (searches for foo = function with any number of spaces between those three tokens),
press on a returned result.
Another variant for function d...