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Semi-transparent color layer over background-image?
... issue for me. (And this is on a work computer.) Naturally, you'll want to test it ahead of time to make sure that it's right for you. And as for old browser compatibility, since the fallback is that the user doesn't see a hover-over effect (with no other problems), I'm ok with that.
...
Check if image exists on server using JavaScript?
...
You can use the basic way image preloaders work to test if an image exists.
function checkImage(imageSrc, good, bad) {
var img = new Image();
img.onload = good;
img.onerror = bad;
img.src = imageSrc;
}
checkImage("foo.gif", function(){ alert("good"); }, fun...
Coalesce function for PHP?
... in most cases, cause PHP to error with an E_NOTICE. The only safe way to test the existence of a variable before using it is to use it directly in empty() or isset(). The ternary operator suggested by Kevin is the best option if you know that all the options in your coalesce are known to be initi...
Changing overflow icon in the action bar
...le you have that is named ic_menu_moreoverflow. If you want a quick way to test it out, use your app's launcher icon filename, which will make it obvious how it works.
A useful resource to use when trying to understand ActionBar styling, is:
Android Action Bar Style Generator
There you can defi...
How do I “decompile” Java class files? [closed]
... of J2SE 5.0 (Java SE 5), has been published on September 30, 2004.
The lastest Java version supported by JAD, the famous Java decompiler written by Mr. Pavel Kouznetsov, is JDK 1.3.
Most of the Java decompilers downloadable today from the Internet, such as “DJ Java Decompiler” or “Cavaj Java ...
How can I undo git reset --hard HEAD~1?
...ewer blobs.
$ git init
Initialized empty Git repository in .git/
$ echo "testing reset" > file1
$ git add file1
$ git commit -m 'added file1'
Created initial commit 1a75c1d: added file1
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 file1
$ echo "added new file" > fil...
Extending Angular Directive
...irective's priority level changes?
JeetendraChauhan has claimed (I haven't tested it though) that this solution will not work in version 1.13.
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How to select date from datetime column?
...ing LIKE instead of operators in an indexed column is high. These are some test results on a table with 1,176,000 rows:
using datetime LIKE '2009-10-20%' => 2931ms
using datetime >= '2009-10-20 00:00:00' AND datetime <= '2009-10-20 23:59:59' => 168ms
When doing a second call over the...
C# elegant way to check if a property's property is null
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In C# 6 you can use the Null Conditional Operator. So the original test will be:
int? value = objectA?.PropertyA?.PropertyB?.PropertyC;
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30条爆笑的程序员梗 PHP是最好的语言 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...唤醒更为渺茫。
他的同事和亲人没放弃，并根据程xx对testing痴迷的作风，每天都在她身边念：“你测的模块上线后回滚了。”
奇迹发生了，程xx醒来第一句话：确认那模块是我测的?
23.烂代码
程序员最憋屈的事情就是：你辛...