大约有 15,000 项符合查询结果（耗时：0.0436秒） [XML]
How can I put a database under git (version control)?
...a database dump, and version control that instead. This way it is a flat text file.
Personally I suggest that you keep both a data dump, and a schema dump. This way using diff it becomes fairly easy to see what changed in the schema from revision to revision.
If you are making big changes, you sho...
Are typedef and #define the same in c?
...
When things get "hairy", using the proper tool makes it right
#define FX_TYPE void (*)(int)
typedef void (*stdfx)(int);
void fx_typ(stdfx fx); /* ok */
void fx_def(FX_TYPE fx); /* error */
share
|
...
How do I delete multiple rows in Entity Framework (without foreach)
...
If you don't want to execute SQL directly calling DeleteObject in a loop is the best you can do today.
However you can execute SQL and still make it completely general purpose via an extension method, using the approach I describe here.
Althoug...
How to center text vertically with a large font-awesome icon?
Lets say I have a bootstrap button with a font-awesome icon and some text:
14 Answers
...
Postgres - FATAL: database files are incompatible with server
...
If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your postgres data directory retaining all data:
brew postgresql-upgrade-database
The above command is taken from the output of brew info postgres
...
Reading CSV files using C#
... DataGrid and show corrupted lines of the CSV file in another grid. For example, show the lines that are shorter than 5 values in another grid. I'm trying to do that like this:
...
Best way to extract a subvector from a vector?
...he simplest way to construct a new vector consisting of a copy of elements X through Y, where 0
14 Answers
...
How to check if a process id (PID) exists
...
To check for the existence of a process, use
kill -0 $pid
But just as @unwind said, if you're going to kill it anyway, just
kill $pid
or you will have a race condition.
If you want to ignore the text output of kill and do something base...
App Inventor 2 数学代码块 · App Inventor 2 中文网
...定随机数种子 (random set seed to)
最小值 (min)
最大值 (max)
平方根 (square root)
绝对值 (abs)
相反数 (neg)
对数 (log)
e^
四舍五入 (round)
上取整 (ceiling)
下取整 (floor)
求模 (modulo)
余数 (remainder)
商 (quotient)
正弦 (sin)
余...