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CSS3滚动条美化效果 - 更多技术 - 清泛网 - 专注C/C++及内核技术
CSS3滚动条美化效果CSS3滚动条美化效果，IE、火狐无效。先看效果：
CSS代码如下：
::-webkit-scrollbar {
width: 14px;
height: 14px;
}
::-webkit-scrollbar-track,
::-webkit-scrollbar-thumb {
border-radius: 999px;
border: 5px solid transparent;
}
::-w...
优化InnerHTML操作 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ead>
<title>test</title>
</head>
<body>
<div>
<p>data<p>
</div>
<script>
document.onmousedown = function() {
for (var i = 0; i < 10; i++) {
var p = document.createElement("p");
p.appendChild(document.createTextNode(Math.random()));
document.getElementsByTa...
css中@media screen and (-webkit-min-device-pixel-ratio:0)解析 - 更多技...
css中@media screen and (-webkit-min-device-pixel-ratio:0)解析@media screen and (-webkit-min-device-pixel-ratio:0) {.down_info caption h5{height:60px; line-height:60px;}}Webkit内核浏览...
@media screen and (-webkit-min-device-pixel-ratio:0) {
.down_info caption h5{height:60px; line-height:60...
SQL: How to properly check if a record exists
...
I would prefer not use Count function at all:
IF [NOT] EXISTS ( SELECT 1 FROM MyTable WHERE ... )
<do smth>
For example if you want to check if user exists before inserting it into the database the query can look like this:
IF NOT EXISTS ( SELECT 1 ...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注C/C++及内核技术
再说WCF Data Contract KnownTypeAttributeWCF-Data-Contract-KnownTypeAttributeWCF中的序列化是用DataContractSerializer,所有被[DataContract]和[DataMemeber]标记的类和属性会被DataContractSerializer序列化。在WCF中...WCF 中的序列化是用DataContractSerializer,所有被[DataC...
再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网 - 专注C/C++及内核技术
再说WCF Data Contract KnownTypeAttributeWCF-Data-Contract-KnownTypeAttributeWCF中的序列化是用DataContractSerializer,所有被[DataContract]和[DataMemeber]标记的类和属性会被DataContractSerializer序列化。在WCF中...WCF 中的序列化是用DataContractSerializer,所有被[DataC...
Rethrowing exceptions in Java without losing the stack trace
...'t catch(Exception e) - this isn't pokemon, and we don't want to catch 'em all!
– corsiKa
Jun 10 '13 at 19:24
3
...
How often should you use git-gc?
...ons that could create many loose objects." Anyone know which commands actually run it?
– Joshua Dance
Jul 8 '14 at 15:36
2
...
Difference between null and empty (“”) Java String
... String("");
System.out.println(a==b);
That would output false because I allocated two different objects, and a and b point to different objects.
However, a.equals(b) in this case would return true, because equals for Strings will return true if and only if the argument String is not null and rep...
How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...
Assuming you've used home-brew to install and upgrade Postgres, you can perform the following steps.
Stop current Postgres server:
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
Initialize a new 10.1 database:
initdb /usr/local/var/pos...