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Get PostGIS version
...s like GEOS and proj4 you might want to get their versions too. Then use:
SELECT PostGIS_full_version();
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Get a list of distinct values in List
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Notes.Select(x => x.Author).Distinct();
This will return a sequence (IEnumerable<string>) of Author values -- one per unique value.
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How to enable MySQL Query Log?
...global general_log = 1;
SET global log_output = 'table';
View the log
select * from mysql.general_log;
Disable Query logging on the database
SET global general_log = 0;
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How to initialize all the elements of an array to any specific value in java
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[Incidentally, memset in C or C++ is only of any real use for arrays of char.]
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What is the most appropriate way to store user settings in Android application
... protected static final String UTF8 = "utf-8";
private static final char[] SEKRIT = ... ; // INSERT A RANDOM PASSWORD HERE.
// Don't use anything you wouldn't want to
// get out there if someone deco...
What does (angle brackets) mean in Java?
...e a reference type. So you can't use primitive types like int or double or char or other primitive types.
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Python: Select subset from list based on index set
...ecause this will be very familiar syntax to users of R, where this kind of selection is very powerful, especially when nested and/or multidimensional.
– Thomas Browne
May 25 '14 at 21:11
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Regex, every non-alphanumeric character except white space or colon
... - matches all the letters
^ - negates them all - so you get - non numeric chars, non spaces and non colons
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keytool error :java.io.IoException:Incorrect AVA format
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Probably you entered illegal character(something like ,(comma)) in a field for Name, Organization or somewhere else.
Of course if you really want some charachter can be escaped with \ sign
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Replace input type=file by an image
... be updated with the filename or at least a message that the file has been selected successfully. The user has no visual input on what happened after he selected the file. Could this be done please? Perhaps change to a different image, when a file is chosen?
– JoaMika
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