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Why should I prefer to use member initialization lists?
... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list:
B()
: a(3)
{
}
This would only call A's A(int) constructor and not its default constructo...
Couldn't connect to server 127.0.0.1:27017
...mongodb is terminating because there is an old lock file.
If you are not and were not running with journaling, remove the lock file, run repair, and start mongodb again.
If you are or were running with journaling turned on, see the relevant Mongo DB docs. Note that they say "If you are running wi...
How do I join two SQLite tables in my Android application?
I have an Android project that has a database with two tables: tbl_question and tbl_alternative .
4 Answers
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Matching a space in regex
... space).
If you're looking for one or more, it's " *" (that's two spaces and an asterisk) or " +" (one space and a plus).
If you're looking for common spacing, use "[ X]" or "[ X][ X]*" or "[ X]+" where X is the physical tab character (and each is preceded by a single space in all those examples)...
Get current URL with jQuery?
I am using jQuery. How do I get the path of the current URL and assign it to a variable?
32 Answers
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What is the difference between SIGSTOP and SIGTSTP?
Just wondering about the difference between SIGSTOP and SIGTSTP signals.
3 Answers
3...
Rename a file in C#
... not work when file names differ only in letter case. For example file.txt and File.txt
– SepehrM
Jul 6 '14 at 20:31
2
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How to display unique records from a has_many through relationship?
...ct => "DISTINCT products.*). In the first case, ALL records are fetched and rails removes the duplicates for you. In the later case, only non-duplicate records are fetched from the db so it might offer better performance if you have a large result set.
– mbreining
...
How does internationalization work in JavaScript?
...environment’s current locale. This function is implementation-dependent, and
it is permissible, but not encouraged, for it to return the same thing as toString.
Every localization method defined in the spec is defined as "implementation-dependent", which results in a lot of inconsistencies. In t...
Check if $_POST exists
I'm trying to check whether a $_POST exists and if it does, print it inside another string, if not, don't print at all.
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