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Why is Magento so slow? [closed]
...x5650 Xeon + 16 GB RAM server and having a Rproxy on top can take up to 50 000 unique visitors a day with smooth pages to everybody.
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How do I measure execution time of a command on the Windows command line?
...t Time: 7:38 am, Wednesday, April 15 2009
Elapsed Time: 0:00:00.000
Process Time: 0:00:00.015
System Calls: 731
Context Switches: 299
Page Faults: 515
Bytes Read: 0
Bytes Written: 0
Bytes Other: 298
You can get TimeIt in the Windows 2003 Resource Kit. It's not ...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...数字分成三组: 012 345 67
2. 把他们转成二进制: 012 转成 0000001100； 345 转成 0101011001； 67 转成 1000011。
3. 把这三个二进制串起来: 0000001100 0101011001 1000011
4. 把数字的个数转成二进制 (version 1-H是10 bits ): 8个数字的二进制是 000000100...
Convert JS Object to form data
...e it was throwing exception if the value is null
– al000y
May 14 at 3:22
For the ES6 version, I added && !(Arr...
How to change color of SVG image using CSS (jQuery SVG image replacement)?
...
Style
svg path {
fill: #000;
}
Script
$(document).ready(function() {
$('img[src$=".svg"]').each(function() {
var $img = jQuery(this);
var imgURL = $img.attr('src');
var attributes = $img.prop("attributes");
$....
Singleton with Arguments in Java
... should use regular, non-singleton classes instead (for example needing 10.000 differently parametrized singleton).
Here is an example for such store:
public final class UsefulObjFactory {
private static Map<Integer, UsefulObj> store =
new HashMap<Integer, UsefulObj>();
...
What is a sensible way to layout a Go project [closed]
...and 500 SLOC. This might sound like a lot but I find it easy to navigate. 1000 SLOC is usually my upper limit for a single file.
Organize the most important type at the top of the file and add types in decreasing importance towards the bottom of the file.
Once your application starts getting abo...
How to increase the gap between text and underlining in CSS
...
No, but you could go with something like border-bottom: 1px solid #000 and padding-bottom: 3px.
If you want the same color of the "underline" (which in my example is a border), you just leave out the color declaration, i.e. border-bottom-width: 1px and border-bottom-style: solid.
For multi...
Escape double quotes in a string
...characters that you write using the backslash:
Backslash with a number:
\000 null
\010 backspace
\011 horizontal tab
\012 new line
\015 carriage return
\032 substitute
\042 double quote
\047 single quote
\134 backslash
\140 grave accent
Backslash with othe character
\a Bell (alert)
\b Backspac...
How to decide font color in white or black depending on background color?
...rresponding text.
if (red*0.299 + green*0.587 + blue*0.114) > 186 use #000000 else use #ffffff
The threshold of 186 is based on theory, but can be adjusted to taste. Based on the comments below a threshold of 150 may work better for you.
Edit: The above is simple and works reasonably well, an...