大约有 44,000 项符合查询结果（耗时：0.0710秒） [XML]
What does the constant 0.0039215689 represent?
...039215689 is approximately equal to 1/255.
Seeing that this is OpenGL, performance is probably important. So it's probably safe to guess that this was done for performance reasons.
Multiplying by the reciprocal is faster than repeatedly dividing by 255.
Side Note:
If you're wondering why such ...
Best way to work with transactions in MS SQL Server Management Studio
...in a transaction, and then execute each batch of T-SQL code line by line.
For example,
Begin Transaction
-Do some T-SQL queries here.
Rollback transaction -- OR commit transaction
If you want to incorporate error handling you can do so by using a TRY...CATCH BLOCK. Should an error occ...
WPF datagrid empty row at bottom
...
Sounds like you probably have CanUserAddRows set to true for the DataGrid. Just add
CanUserAddRows="false"
to the XAML.
share
|
improve this answer
|
fol...
What is the purpose of a plus symbol before a variable?
...referred way of converting something into a number, because it does not perform any other operations on the number." (just for an "official" answer)
– A N
Nov 4 '19 at 0:01
...
Javascript: get package.json data in gulpfile.js
... how would one get info from the package.json file within the gulpfile.js; For instance, I want to get the homepage or the name and use it in a task.
...
How to make git ignore changes in case?
...he [core] section of .git/config
e.g. add ignorecase = true
To change it for just one repo, from that folder run:
git config core.ignorecase true
To change it globally:
git config --global core.ignorecase true
share
...
In Git, how do I figure out what my current revision is?
...he hash of the current HEAD, you probably want:
$ git rev-parse HEAD
or for the short revision hash:
$ git rev-parse --short HEAD
It is often sufficient to do:
$ cat .git/refs/heads/${branch-master}
but this is not reliable as the ref may be packed.
...
Having options in argparse with a dash
...
As indicated in the argparse docs:
For optional argument actions, the value of dest is normally inferred from the option strings. ArgumentParser generates the value of dest by taking the first long option string and stripping away the initial -- string. Any in...
Is it possible to create static classes in PHP (like in C#)?
...cally (if you try and call self::__construct() you'll get an error).
Therefore you'd have to create an initialize() function and call it in each method:
<?php
class Hello
{
private static $greeting = 'Hello';
private static $initialized = false;
private static function initialize(...
Why do I get “Procedure expects parameter '@statement' of type 'ntext/nchar/nvarchar'.” when I try t
...
I had missed another tiny detail: I forgot the brackets "(100)" behind NVARCHAR.
share
|
improve this answer
|
follow
|
...