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Creating your own header file in C
Can anyone explain how to create a header file in C with a simple example from beginning to end.
4 Answers
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“Warning: iPhone apps should include an armv6 architecture” even with build config set
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If using Xcode 4.2 or higher, try the following:
Click your Project name (in the left column), followed by the Target:
Click the 'Build Settings' tab (in the right column):
Click the 'Release' or 'Distribution' row under 'Archit...
What does the caret operator (^) in Python do?
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It's a bitwise XOR (exclusive OR).
It results to true if one (and only one) of the operands (evaluates to) true.
To demonstrate:
>>> 0^0
0
>>> 1^1
0
>>> 1^0
1
>>> 0^1
1
To explain one of your own exa...
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.
14 ...
Are email addresses case sensitive?
...t of e-mail is case sensitive, however I've tried to send e-mail to name@example.com , Name@example.com and NAME@example.com - it has arrived in each case.
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Print array to a file
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Either var_export or set print_r to return the output instead of printing it.
Example from PHP manual
$b = array (
'm' => 'monkey',
'foo' => 'bar',
'x' => array ('x', 'y', 'z'));
$results = print_r($b, true); //...
Why should text files end with a newline?
I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
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Get the latest record from mongodb collection
...s are inserted in.
Edit: For all the downvoters, above is a Mongoose syntax,
mongo CLI syntax is: db.collectionName.find({}).sort({$natural:-1}).limit(1)
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How do I best silence a warning about unused variables?
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You can put it in "(void)var;" expression (does nothing) so that a compiler sees it is used. This is portable between compilers.
E.g.
void foo(int param1, int param2)
{
(void)param2;
bar(param1);
}
Or,
#define UNUSED(expr) do { (void)(expr); } ...
How can I list all commits that changed a specific file?
...all commits regarding that filename (not actual file). If you create files X and Y, changed both, then deleted Y and renamed X to Y and then also changed it, and you run git log Y, you will get messages for both old Y and new one. And the opposite, with --follow you will get commits regarding that f...