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How do function pointers in C work?
...nPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFac...
Get Substring - everything before certain char
... you've got more code than the methods that have been proposed already. It all depends on how much you know about the incoming data.
– Dominic Cronin
Nov 12 '12 at 19:50
7
...
How can I discard remote changes and mark a file as “resolved”?
...ges causing conflicts. Is there a command I can use to in effect say "mark all conflicts as resolved, use local"?
2 Answers...
Why does (0 < 5 < 3) return true?
...d while I was editing my question to add the if(0 < 5 < 1) == false. All is clear now, thanks :)
– punkrockbuddyholly
Nov 3 '10 at 16:39
...
postgresql return 0 if returned value is null
...ns the first of its arguments that is not null.
Null is returned only if all arguments are null. It is often
used to substitute a default value for null values when data is
retrieved for display.
Edit
Here's an example of COALESCE with your query:
SELECT AVG( price )
FROM(
SELECT *, cum...
How to move a git repository into another directory and make that directory a git repository?
...create it)
$ cp -r gitrepo1 newrepo
# remove .git from old repo to delete all history and anything git from it
$ rm -rf gitrepo1/.git
Note that the copy is quite expensive if the repository is large and with a long history. You can avoid it easily too:
# move the directory instead
$ mv gitrepo1 ...
How to remove line breaks (no characters!) from the string?
...
You should be able to replace it with a preg that removes all newlines and carriage returns. The code is:
preg_replace( "/\r|\n/", "", $yourString );
Even though the \n characters are not appearing, if you are getting carriage returns there is an invisible character there. The pr...
How to pull request a wiki page on GitHub?
...control, as for source code:
My proposed workflow is this:
Manually create a fork of the Taffy wiki on your Github account:
Create a new repository on your github account. Let's call it "Taffy-Wiki".
Clone the Taffy wiki repo to your local machine somewhere: git clone git@githu...
Remove all spaces from a string in SQL Server
What is the best way to remove all spaces from a string in SQL Server 2008?
23 Answers
...
Json.net serialize/deserialize derived types?
...Derived). This way, it doesn't bloat your JSON as much as TypeNameHandling.All.
– AJ Richardson
Mar 25 '15 at 13:18
I ...