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Practical uses for AtomicInteger
... 1 operations, this is detected rather than overwriting the old update (avoiding the "lost update" problem). This is actually a special case of compareAndSet - if the old value was 2, the class actually calls compareAndSet(2, 3) - so if another thread has modified the value in the meantime, the inc...
gcc warning" 'will be initialized after'
...
So the order of declarations has semantic meaning, even if there's no relationship between the declarations? How pointless!
– Cuadue
Aug 26 '14 at 15:46
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PowerShell: Setting an environment variable for a single command only
...$pre} else {Remove-Item env:\foo}... some might say unwieldy, but will avoid side effects...
– Lucas
Jun 21 '17 at 21:32
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Blank space at top of UITextView in iOS 10
... where you haven't subclassed a view controller. And overriding the method means your code will still work on lower iOS versions - setting the property means you need a compatibility check first.
– jrturton
Oct 22 '13 at 6:25
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Exclude all transitive dependencies of a single dependency
...he app module yet). I found this to work:
<dependency>
<groupId>${project.groupId}</groupId>
<artifactId>app</artifactId>
<version>${project.version}</version>
<exclusions>
<exclusion>
<groupId>*</gro...
When should I use a table variable vs temporary table in sql server?
...o object types. This also addresses your question about disk vs memory (I didn't see any significant difference in behaviour between the two).
Regarding the question in the title though as to when to use a table variable vs a local temporary table you don't always have a choice. In functions, for e...
Download File Using Javascript/jQuery
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Use an invisible <iframe>:
<iframe id="my_iframe" style="display:none;"></iframe>
<script>
function Download(url) {
document.getElementById('my_iframe').src = url;
};
</script>
To force the browser to download a file it would otherwi...
Why don't structs support inheritance?
...ct, added fields, etc.
a = b; //?? expand size during assignment?
would mean struct variables don't have fixed size, and that is why we have reference types.
Even better, consider this:
BaseStruct[] baseArray = new BaseStruct[1000];
baseArray[500] = new InheritedStruct(); //?? morph/resize the...
实战低成本服务器搭建千万级数据采集系统 - 更多技术 - 清泛网 - 专注C/C++...
...法。由于有两个表作为数据插入表，使用数据库表的自增id并不太合适，需要一个高速的唯一自增Id服务器提供生成分布式ID。另数据库完全可以关闭写事务日志 ，提高性能，因为抓取的数据当时丢失再启动抓取就可以了， 这样...
iOS - How to set a UISwitch programmatically
...in the developer API, the task setOn: animated: should do the trick.
- (void)setOn:(BOOL)on animated:(BOOL)animated
So to set the switch ON in your program, you would use:
Objective-C
[switchName setOn:YES animated:YES];
Swift
switchName.setOn(true, animated: true)
...