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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
I have taken Problem #12 from Project Euler as a programming exercise and to compare my (surely not optimal) implementations in C, Python, Erlang and Haskell. In order to get some higher execution times, I search for the first triangle number with more than 1000 divisors instead of 500 as stated...
How do I get the entity that represents the current user in Symfony2?
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210
Symfony 4+, 2019+ Approach
In symfony 4 (probably 3.3 also, but only real-tested in 4) you ca...
Error message 'Unable to load one or more of the requested types. Retrieve the LoaderExceptions prop
I have developed an application using Entity Framework , SQL Server 2000, Visual Studio 2008 and Enterprise Library.
35 ...
Trying to start a service on boot on Android
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edited May 2 '17 at 7:42
Benoit Duffez
9,1201010 gold badges6565 silver badges113113 bronze badges
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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
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answered May 17 '09 at 14:26
GumboGumbo
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Get Bitmap attached to ImageView
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answered Nov 29 '11 at 6:15
Arslan AnwarArslan Anwar
18.1k1616 gold badges7272 silver badges104104 bronze badges
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How do I limit the number of results returned from grep?
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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...