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What is the best way to uninstall gems from a rails3 project?
...our gems global. Consider using a gem manager such as rbenv or rvm to keep sets of gems scoped to specific projects.
This means that no gems will be installed at a global level and therefore when you remove one from your project's Gemfile and rerun bundle then it, obviously, won't be loaded in your...
Total memory used by Python process?
Is there a way for a Python program to determine how much memory it's currently using? I've seen discussions about memory usage for a single object, but what I need is total memory usage for the process, so that I can determine when it's necessary to start discarding cached data.
...
How to define hash tables in Bash?
...)
Then use them just like normal arrays. Use
animals['key']='value' to set value
"${animals[@]}" to expand the values
"${!animals[@]}" (notice the !) to expand the keys
Don't forget to quote them:
echo "${animals[moo]}"
for sound in "${!animals[@]}"; do echo "$sound - ${animals[$sound]}"; d...
recursion versus iteration
Is it correct to say that everywhere recursion is used a for loop could be used? And if recursion is usually slower what is the technical reason for ever using it over for loop iteration?
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How to save traceback / sys.exc_info() values in a variable?
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Are HLists nothing more than a convoluted way of writing tuples?
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How do I get the different parts of a Flask request's url?
..._url: http://127.0.0.1:5000/alert/dingding/test
request.url_charset: utf-8
request.url_root: http://127.0.0.1:5000/
str(request.url_rule): /alert/dingding/test
request.host_url: http://127.0.0.1:5000/
request.host: 127.0.0.1:5000
request....
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
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Why can't I forward-declare a class in a namespace using double colons?
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【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
..._ioctl,
.listen = sock_no_listen,
.shutdown = inet_shutdown,
.setsockopt = sock_common_setsockopt,
.getsockopt = sock_common_getsockopt,
.sendmsg = inet_sendmsg,
.recvmsg = inet_recvmsg,
.mmap = sock_no_mmap,
.sendpage = inet_sendpage,
.set_peek_off = s...