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What's an easy way to read random line from a file in Unix command line?
...from the Camel Book:
perl -e 'srand; rand($.) < 1 && ($line = $_) while <>; print $line;' file
This has a significant advantage in space over reading the whole file in. You can find a proof of this method in The Art of Computer Programming, Volume 2, Section 3.4.2, by Donald E. K...
Override configured user for a single git commit
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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java.net.URLEncoder.encode(String) is deprecated, what should I use instead?
...encode(
"urlParameterString",
java.nio.charset.StandardCharsets.UTF_8.toString()
)
);
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NoSQL (MongoDB) vs Lucene (or Solr) as your database
With the NoSQL movement growing based on document-based databases, I've looked at MongoDB lately. I have noticed a striking similarity with how to treat items as "Documents", just like Lucene does (and users of Solr).
...
Logging best practices [closed]
...erheads).
Areas you might want to look at extending (if needed):
Database trace listener
Colored console trace listener
MSMQ / Email / WMI trace listeners (if needed)
Implement a FileSystemWatcher to call Trace.Refresh for dynamic configuration changes
Other Recommendations:
Use structed ...
Troubleshooting “Illegal mix of collations” error in mysql
...ERE clause will always give the error you posted:
WHERE 'A' COLLATE latin1_general_ci = 'A' COLLATE latin1_general_cs
Your solution is to specify a shared collation for the two columns within the query. Here is an example that uses the COLLATE clause:
SELECT * FROM table ORDER BY key COLLATE lat...
How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...mport scala.reflect.Manifest
private var map= Map.empty[Any,(Manifest[_], Any)]
def register[T](name: Any, item: T)(implicit m: Manifest[T]) {
map = map.updated(name, m -> item)
}
def get[T](key:Any)(implicit m : Manifest[T]): Option[T] = {
map get key flatMap {
ca...
How can I view all the git repositories on my machine?
... it out. Edit out svn and cvs if not required
– quiet_penguin
Oct 29 '18 at 12:32
...
惨不忍睹：说一说你最穷的时候是什么样子 - 创意 - 清泛网 - 专注C/C++及内核技术
...道
@EZ汽车人：在北京一个月吃饭花200
@贰拾壹-_- ：拉屎拉一半，怕饿得快。。。。。。
类型二：不敢出门+避免社交型
@螺丝脱落司机：开启免打扰模式，然后各种宅。
@猪脚L:穷到家里待了一个星...
Applications are expected to have a root view controller at the end of application launch
...s happened to me. Solved by editing .plist file.
Specify the Main nib file base name.(Should be MainWindow.xib).
Hope this will help.
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