大约有 15,000 项符合查询结果（耗时：0.0387秒） [XML]
HTML5 Canvas Resize (Downscale) Image High Quality?
..._a = 0;
var center_y = (j + 0.5) * ratio_h;
var yy_start = Math.floor(j * ratio_h);
var yy_stop = Math.ceil((j + 1) * ratio_h);
for (var yy = yy_start; yy < yy_stop; yy++) {
var dy = Math.abs(center_y - (yy + 0.5)) / ratio_h_half;
...
Haskell testing workflow
I just started a new Haskell project and wanted to set up a good testing workflow from the beginning. It seems like Haskell has a lot of excellent and unique testing tools and many different ways to integrate them.
...
Node.js Error: Cannot find module express
...e too. I had winston installed globally, which worked for some reason when starting my app as a normal user, but when starting my app and a system init script it wouldn't work. I fixed it by installing winston locally in the app directory (and adding it to package.json).
– trus...
How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
...lution. I've reproduced it with a couple of edits below
Step 0:
Before I start, I assume that you have MySQL, Python, and GCC installed on the mac.
Step 1:
Download the latest MySQL for Python adapter from SourceForge.
Step 2:
Extract your downloaded package:
tar xzvf MySQL-python-1.2.2.tar.gz
...
What is the difference between “screen” and “only screen” in media queries?
...le sheets from older user agents. User agents must process media queries starting with ‘only’ as if the ‘only’ keyword was not present.
As there is no such media type as "only", the style sheet should be ignored by older browsers.
Here's the link to that quote that is shown in example 9...
C# Thread safe fast(est) counter
...public static void Main()
{
cte = new CountdownEvent(1);
// Start three threads.
for (int ctr = 0; ctr <= 2; ctr++) {
cte.AddCount();
Thread th = new Thread(GenerateNumbers);
th.Name = "Thread" + ctr.ToString();
th.Start();
}
c...
Syntax highlighting for Jade in Sublime Text 2?
I just started using Sublime Text 2 on Mac. I also just started using Jade for my views in Node.js, and am wondering if there is a way to add syntax highlighting for Jade into Sublime Text 2.
...
Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...QL-92 syntax. Sixteen years after it was approved, it's about time people start using it! And all brands of SQL database now support it, so there's no reason to continue to use the nonstandard (+) Oracle syntax or *= Microsoft/Sybase syntax.
As for why it's so hard to break the developer communit...
How to get elements with multiple classes
...collection of nodes. The nodes can be accessed by index numbers. The index starts at 0.
also learn more about https://www.w3schools.com/jsref/met_document_queryselectorall.asp
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Extract a substring according to a pattern
... [1] "E001" "E002" "E003"
4) substring
This assumes second portion always starts at 4th character (which is the case in the example in the question):
substring(string, 4)
## [1] "E001" "E002" "E003"
4a) substring/regex
If the colon were not always in a known position we could modify (4) by searchi...