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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...oc/free系列函数，而glibc使用的ptmalloc2在性能上远远弱后于google的tcmalloc和facebook的jemalloc。 而且后两者只需要使用LD_PRELOAD环境变量启动程序即可，甚至并不需要重新编译。
glibc ptmalloc2
ptmalloc2即是我们当前使用的glibc malloc版本。...
How to get current path with query string using Capybara
... parsing involved.
I have made a pull request to add this to Capybara at: https://github.com/jnicklas/capybara/pull/1405
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Search for “does-not-contain” on a DataFrame in pandas
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Where do I use delegates? [closed]
...
A quick google search came up with this http://en.wikipedia.org/wiki
Getting pids from ps -ef |grep keyword
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Facebook Android Generate Key Hash
...th your own package name ( package name in Manifest.xml).
Official link - https://developers.facebook.com/docs/android/login-with-facebook/ ( See the bottom of the page)
OLD ANSWER (Generating Keyhash using openssl )
to generate signature you need openssl installed on your pc. If you don’t hav...
Make the first letter uppercase inside a django template
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Open a file from Cygwin
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How to change the DataTable Column Name?
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SQLAlchemy: What's the difference between flush() and commit()?
...ld use a flush instead of just committing.
Since a commit always flushes (https://docs.sqlalchemy.org/en/13/orm/session_basics.html#committing) these sound really similar. I think the big issue to highlight is that a flush is not permanent and can be undone, whereas a commit is permanent, in the se...