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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...础知识还不了解,建议先去看看.开始配置我们来配置一个filter表的防火墙.(1)查看本机关于IPTABLES的设置情况[root@tp ~]...如果你的IPTABLES基础知识还不了解,建议先去看看.
开始配置
我们来配置一个filter表的防火墙.
(1)查看本机关于...
typedef struct vs struct definitions [duplicate]
I'm a beginner in C programming, but I was wondering what's the difference between using typedef when defining a structure versus not using typedef . It seems to me like there's really no difference, they accomplish the same goal.
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How do I move forward and backward between commits in git?
...f the linked answers. FWIW, I tried a version of this with a simple linear set of commits and finally just gave up.
– Snowcrash
Aug 20 '19 at 11:47
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Checkout subdirectories in Git?
...t/blob/v2.19.0/t/t5616-partial-clone.sh
Test it out
#!/usr/bin/env bash
set -eu
list-objects() (
git rev-list --all --objects
echo "master commit SHA: $(git log -1 --format="%H")"
echo "mybranch commit SHA: $(git log -1 --format="%H")"
git ls-tree master
git ls-tree mybranch | grep myb...
What would a “frozen dict” be?
... too often (though it would still probably be useful more often than frozenset is).
The most common reason to want such a type is when memoizing function calls for functions with unknown arguments. The most common solution to store a hashable equivalent of a dict (where the values are hashable) is ...
ruby on rails f.select options with custom attributes
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...
Trimming a huge (3.5 GB) csv file to read into R
... incomplete rows (leading Access and SQL to choke). It's county level data set broken into segments, sub-segments, and sub-sub-segments (for a total of ~200 factors) for 40 years. In short, it's huge, and it's not going to fit into memory if I try to simply read it.
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How to jump to a specific character in vim?
...won't be matched) to change the highlighted search string. There is also :set invhls which is useful for toggling the highlights off and on (I map this to a shortcut for quick toggling).
– FazJaxton
Apr 4 '19 at 14:34
...
Generate a random point within a circle (uniformly)
...orm value between 0 and 1
CDF-1(random()) = √random()
Which is what we set out to derive :-)
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Pairs from single list
Often enough, I've found the need to process a list by pairs. I was wondering which would be the pythonic and efficient way to do it, and found this on Google:
...