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Postgresql aggregate array
...nt name on GROUP BY.
CREATE TABLE grade
(Student_id int, Mark varchar(2));
INSERT INTO grade
(Student_id, Mark)
VALUES
(1, 'A'),
(2, 'B'),
(2, 'B+'),
(3, 'C'),
(3, 'A');
CREATE TABLE student
(Id int primary key, Name varchar(5));
INSERT INTO student
(Id, Name...
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
...ractice is selecting the most appropriate one.
.Net Framework 4.0 Beta 2 has a new IsNullOrWhiteSpace() method for
strings which generalizes the IsNullOrEmpty() method to also include other white
space besides empty string.
The term “white space” includes all characters that are not...
Converting user input string to regular expression
...
answered May 17 '09 at 14:26
GumboGumbo
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Get Bitmap attached to ImageView
...
answered Nov 29 '11 at 6:15
Arslan AnwarArslan Anwar
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How do I limit the number of results returned from grep?
...
249
The -m option is probably what you're looking for:
grep -m 10 PATTERN [FILE]
From man grep:...
Find first element in a sequence that matches a predicate
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260
To find first element in a sequence seq that matches a predicate:
next(x for x in seq if pred...
Renaming or copying files and folder using NERDTree on Vim. Is it possible?
...
2 Answers
2
Active
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How to declare a global variable in JavaScript?
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215
If you have to generate global variables in production code (which should be avoided) always d...
Each for object? [duplicate]
...he jQuery.each and Object.keys functions take care of this automatically.
2 . Another potential issue with a plain for-loop is that of scope and non-closures. This is a bit complicated, but take for example the following code. We have a bunch of buttons with ids button0, button1, button2 etc, and w...
Mysql - How to quit/exit from stored procedure
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207
CREATE PROCEDURE SP_Reporting(IN tablename VARCHAR(20))
proc_label:BEGIN
IF tablename IS ...