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How can I echo a newline in a batch file?
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the example doesn't need a period, but you do need one to echo a blank empty line: echo. && echo hello && echo. && echo world
– matt wilkie
Jun 16 '11 at 22:37
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Why isn't SQL ANSI-92 standard better adopted over ANSI-89?
...rence in optimization or performance of SQL-89 versus SQL-92 style joins. One can assume that most RDBMS engines transform the syntax into an internal representation before optimizing or executing the query, so the human-readable syntax makes no difference.
I also try to evangelize the SQL-92 synt...
What is the difference between indexOf() and search()?
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The search function (one description here) takes a regular expression, which allows you to match against more sophisticated patters, case-insensitive strings, etc., while indexOf (one description here) simply matches a literal string. However, in...
In Python, when should I use a function instead of a method?
The Zen of Python states that there should only be one way to do things- yet frequently I run into the problem of deciding when to use a function versus when to use a method.
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RegEx to parse or validate Base64 data
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^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$
This one is good, but will match an empty String
This one does not match empty string :
^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$
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Cannot make a static reference to the non-static method
...n the type directly, say like this:
The previous statement is not correct. One can also refer to static fields with an object reference like myObject.staticMethod() but this is discouraged because it does not make it clear that they are class variables.
... = SomeClass.final
And the two cannot w...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
...vided by 2) [IT IS NOT RANDOM]. So if you built the solution late in a day one day, and early in a day the next day, the later build would have an earlier version number. I recommend always using X.Y.* instead of X.Y.Z.* because your version number will ALWAYS increase this way.
Newer versions of V...
ArrayIndexOutOfBoundsException with custom Android Adapter for multiple views in ListView
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This one is nasty. No way to debug it. Thanks a lot, Romain Guy for explaining it.
– Yar
Sep 28 '11 at 17:31
1...
Is there a way to check if a file is in use?
...g(FileStream stream = file.Open(FileMode.Open, FileAccess.Read, FileShare.None))
{
stream.Close();
}
}
catch (IOException)
{
//the file is unavailable because it is:
//still being written to
//or being processed by another thread
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Add … if string is too long PHP [duplicate]
...ld in my MySQL database, and I access the database on two different pages, one page I display the whole field, but on the other, I just want to display the first 50 characters. If the string in the description field is less than 50 characters, then it won't show ... , but if it isn't, I will show ....