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XPath - Selecting elements that equal a value
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The XPath spec. defines the string value of an element as the concatenation (in document order) of all of its text-node descendents.
This explains the "strange results".
"Better" results can be obtained using the expressions below:
//*[text() = 'qwe...
String isNullOrEmpty in Java? [duplicate]
...ries (including apache/google/...), a static isNullOrEmpty() method for Strings ?
10 Answers
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How to check if a line is blank using regex
...like this in multiline mode:
^\s*$
Explanation:
^ is the beginning of string anchor.
$ is the end of string anchor.
\s is the whitespace character class.
* is zero-or-more repetition of.
In multiline mode, ^ and $ also match the beginning and end of the line.
References:
regular-expression...
Remove substring from the string
I am just wondering if there is any method to remove string from another string?
Something like this:
10 Answers
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How to remove all debug logging calls before building the release version of an Android app?
...ation — the log tag is set automatically, and it's easy to log formatted strings and exceptions — but you can also specify different logging behaviours at runtime.
In this example, logging statements will only be written to logcat in debug builds of my app:
Timber is set up in my Application o...
Java Runtime.getRuntime(): getting output from executing a command line program
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Here is the way to go:
Runtime rt = Runtime.getRuntime();
String[] commands = {"system.exe", "-get t"};
Process proc = rt.exec(commands);
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(proc.getInputStream()));
BufferedReader stdError = new BufferedReader(...
Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
What is the easiest way to encode a PHP string for output to a JavaScript variable?
14 Answers
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Unable to cast object of type 'System.DBNull' to type 'System.String`
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A shorter form can be used:
return (accountNumber == DBNull.Value) ? string.Empty : accountNumber.ToString()
EDIT: Haven't paid attention to ExecuteScalar. It does really return null if the field is absent in the return result. So use instead:
return (accountNumber == null) ? string.Empty :...
Get query from java.sql.PreparedStatement [duplicate]
...n question may return the complete SQL by just calling PreparedStatement#toString(). I.e.
System.out.println(preparedStatement);
To my experience, the ones which do so are at least the PostgreSQL 8.x and MySQL 5.x JDBC drivers. For the case your JDBC driver doesn't support it, your best bet is us...
PHP - How to check if a string contains a specific text [duplicate]
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@Blender sorry, you're right. I was thinking of the .NET String.IndexOf which returns -1 in event of a non-match. I've corrected my answer.
– Dai
Mar 9 '13 at 1:54
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