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How to split a delimited string into an array in awk?
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@WhiteWind: another way to "ensure" that | is seen as a char and not a special symbol is to put it between [] : ie, split($0, a, "[|]") # I like this better than '\|', in some cases, especially as some variant of regexp (perl vs grep vs .. others?) can have "|" interepreted l...
How does MySQL process ORDER BY and LIMIT in a query?
...e LIMIT clause can be used to constrain the number of rows returned by the SELECT statement. LIMIT takes one or two numeric arguments, which must both be nonnegative integer constants (except when using prepared statements).
With two arguments, the first argument specifies the offset of the first ...
Check if option is selected with jQuery, if not select a default
Using jQuery, how do you check if there is an option selected in a select menu, and if not, assign one of the options as selected.
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How to write :hover condition for a:before and a:after?
...t comes after the pseudo-class (and in fact, at the very end of the entire selector). Notice also that they are two different things; calling them both "pseudo-selectors" is going to confuse you once you run into syntax problems such as this one.
If you're writing CSS3, you can denote a pseudo-eleme...
selecting unique values from a column
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Use the DISTINCT operator in MySQL:
SELECT DISTINCT(Date) AS Date FROM buy ORDER BY Date DESC;
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When to use SELECT … FOR UPDATE?
Please help me understand the use-case behind SELECT ... FOR UPDATE .
2 Answers
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Select distinct using linq [duplicate]
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myList.GroupBy(test => test.id)
.Select(grp => grp.First());
Edit: as getting this IEnumerable<> into a List<> seems to be a mystery to many people, you can simply write:
var result = myList.GroupBy(test => test.id)
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Easiest way to split a string on newlines in .NET?
...t your string pretty easily, like so:
aString.Split(Environment.NewLine.ToCharArray());
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Select last row in MySQL
How can I SELECT the last row in a MySQL table?
10 Answers
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How do I resolve configuration errors with Nant 0.91?
... to be performed: before extracting, one must right click on the zip file, select Properties and under the General tab, click the button labelled Unblock, then click OK on the Properties window. Now, extract the file to your desired location, ensure it is on the system path, open a new command line ...