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Count how many files in directory PHP
...eople are saying this is confusing for some developers, should we add that if one is using namespaces (since this method requires a recent version of PHP in any case), then one must also specify the namespace: $fi = new \FilesystemIterator(DIR, \FilesystemIterator::SKIP_DOTS);
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Delete everything in a MongoDB database
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Use with caution: if you're in a sharded environment using wiredTiger and you have no user database and you invoke dropDatabase, the database will be deleted and could re-appear as primary on a different shard when new records are added.
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How to pip install a package with min and max version range?
I'm wondering if there's any way to tell pip, specifically in a requirements file, to install a package with both a minimum version ( pip install package>=0.2 ) and a maximum version which should never be installed (theoretical api: pip install package<0.3 ).
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How do you list the active minor modes in emacs?
... (mapc (lambda (mode) (condition-case nil
(if (and (symbolp mode) (symbol-value mode))
(add-to-list 'active-modes mode))
(error nil) ))
minor-mode-list)
(message "Active modes are %s" active-mod...
How to execute shell command in Javascript
...og('stdout: ' + stdout);
console.log('stderr: ' + stderr);
if (error !== null) {
console.log('exec error: ' + error);
}
});
child();
Hope this helps!
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What is the best way to get the count/length/size of an iterator?
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If you've just got the iterator then that's what you'll have to do - it doesn't know how many items it's got left to iterate over, so you can't query it for that result. There are utility methods that will seem to do this (su...
Do you leave parentheses in or out in Ruby? [closed]
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multiple arguments and no parentheses.
A lot of Ruby-based Domain Specific Languages (such as Rake) don't use
parenthesis to preserve a more natural
language feel to their statements.
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Remove everything after a certain character
...g the value from an href and up to the "?", and it's always going to be a different amount of characters.
8 Answers
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Why does Math.Round(2.5) return 2 instead of 3?
...age - it doesn't decide how Math.Round is implemented.
And secondly, no - if you read the docs, you'll see that the default rounding is "round to even" (banker's rounding):
Return ValueType: System.DoubleThe integer nearest a. If the
fractional component of a is halfway
between two integers...
C# constructor execution order
...the chain in this class are executed (note that there can be more than one if they're chained with Foo() : this(...) etc
Note that in Java, the base class is initialized before variable initializers are run. If you ever port any code, this is an important difference to know about :)
I have a page...