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转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
转：postfix安装Q&A 原文地址：http: bbs.chinaunix.net viewthread.php?tid=770141执照wangmingda老大的资料安装成功postfix（地址在这里http: www.extmail....
原文地址：http://bbs.chinaunix.net/viewthread.php?tid=770141
执照wangmingda老大...
C++ stl stack/queue 的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++ stl stack/queue 的使用方法1、stackstack 模板类的定义在<stack>头文件中。stack 模板类需要两个模板参数，一个是元素类型，一个容器类型，但只有元素类型是必要的...1、stack
stack 模板类的定义在<stack>头文件中。
stack 模板类需要...
git stash blunder: git stash pop and ended up with merge conflicts
...things:
Decide not to merge. The only clean-ups you need are to reset the index file to the HEAD commit to reverse 2. and to clean up working tree changes made by 2. and 3.; git-reset --hard can be used for this.
Resolve the conflicts. Git will mark the conflicts in the working tree. Edit the file...
How to calculate the number of occurrence of a given character in each row of a column of strings?
...tion which seems to do what you're interested in
# Load your example data
q.data<-data.frame(number=1:3, string=c("greatgreat", "magic", "not"), stringsAsFactors = F)
library(stringr)
# Count the number of 'a's in each element of string
q.data$number.of.a <- str_count(q.data$string, "a")
q.d...
Different bash prompt for different vi editing mode?
...###############
# FOR MORE INFORMATION CHECK:
# https://wiki.archlinux.org/index.php/Readline
# TURN ON VIM (E.G. FOR READLINE)
set editing-mode vi
# SHOW THE VIM MODE IN THE PROMPT (COMMAND OR INSERT)
set show-mode-in-prompt on
# SET THE MODE STRING AND CURSOR TO INDICATE THE VIM MODE
# FOR TH...
cscope or ctags why choose one over the other? [closed]
...-name '*.hpp' \
> cscope.files
# -b: just build
# -q: create inverted index
cscope -b -q
This searches for code that I'm interested in, creates the cscope.files list and creates the database. That way I can run ":!cscope_gen.sh" instead of having to remember all the set up steps.
I map cscop...
Performance of Arrays vs. Lists
... bit of micro-optimisation; arrays can be marginally faster if you use the indexer / for form - but IIRC believe it depends on the type of data in the array. But unless you need to micro-optimise, keep it simple and use List<T> etc.
Of course, this only applies if you are reading all of the d...
How do I disable form fields using CSS?
...events: none;
}
</style>
Update:
and if want to disable from tab index you can use it this way:
<input type="text" name="username" value="admin" tabindex="-1" >
<style type="text/css">
input[name=username] {
pointer-events: none;
}
</style>
...
How do you reverse a string in place in C or C++?
How do you reverse a string in C or C++ without requiring a separate buffer to hold the reversed string?
30 Answers
...
LINQ to SQL Left Outer Join
...sion:
MS SQL Server 2017 - 14... (on Windows 10).
All relevant tables had indexes on the primary keys only.
My conclusion: it's always recommended to look at the generated SQL since it can really differ.
[1] Interestingly enough, when setting the 'Client statistics' in MS SQL Server Management ...