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Why use the params keyword?
...e) [] {} to Calls where it doesn't apply.
Btw, imho, the safest (and most readable practice) is to:
pass via Named Parameters (which we can now do even in C# ~2 decades after we could in VB ;P) (because:
1.1. it's the only way that guarantees prevention of unintended values passed to Parameter...
MySQL复制的概述、安装、故障、技巧、工具 - 数据库(内核) - 清泛网 - 专注...
...用如下命令查看：
mysql> SHOW SLAVE STATUS;
Master_Log_File & Read_Master_Log_Pos：下一个传输的主日志信息。
Relay_Master_Log_File & Exec_Master_Log_Pos：下一个执行的主日志信息。
Relay_Log_File & Relay_Log_Pos：下一个执行的中继日志信息。
理...
Making macOS Installer Packages which are Developer ID ready
...he Distribution.xml you can change things like title, background, welcome, readme, license, and so on. You turn your component packages and distribution definition with this command into a product archive:
$ productbuild --distribution ./Distribution.xml \
--package-path . \
./Installer.pkg...
Blocks and yields in Ruby
... I agree. I don't think I knew half of the stuff explained until I read it.
– theIV
Jun 18 '10 at 1:58
1
...
java get file size efficiently
...rn the file length. It returns the amount of bytes which are available for read without blocking other streams. It is not necessarily the same amount of bytes as file length. To get the real length from a stream, you really need to read it (and count the read bytes meanwhile).
–...
constant pointer vs pointer on a constant value [duplicate]
...ecause these sit to the right of the variable name) this becomes a case of reading from right-to-left.
So with char *const a; you have a, which is a const pointer (*) to a char. In other words you can change the char which a is pointing at, but you can't make a point at anything different.
Convers...
Mean per group in a data.frame [duplicate]
...his type of operation is exactly what aggregate was designed for:
d <- read.table(text=
'Name Month Rate1 Rate2
Aira 1 12 23
Aira 2 18 73
Aira 3 19 45
Ben 1 53 19
Ben 2 22 87
Ben 3 19...
Getting root permissions on a file inside of vi? [closed]
...
Common Caveats
The most common method of getting around the read-only file problem is to open a pipe to current file as the super-user using an implementation of sudo tee. However, all of the most popular solutions that I have found around the Internet have a combination of a several...
In mongoDb, how do you remove an array element by its index?
...approach is not atomic and can cause some race conditions if other clients read and/or write between the two operations. If we need the operation to be atomic, we could:
Read the document from the database
Update the document and remove the item in the array
Replace the document in the database. T...
How can I replace every occurrence of a String in a file with PowerShell?
...-Content file.txt) is required:
Without the parenthesis the content is read, one line at a time, and flows down the pipeline until it reaches out-file or set-content, which tries to write to the same file, but it's already open by get-content and you get an error. The parenthesis causes the oper...