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How to check if a variable is not null?
...n case for those wondering... This does not check for an empty string ("") and undefined. See my fiddle as reference: jsfiddle.net/b0tm7yaf
– Barrosy
Jan 18 '19 at 15:25
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iPhone app in landscape mode, 2008 systems
Please note that this question is from 2008 and now is of only historic interest.
8 Answers
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best way to preserve numpy arrays on disk
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h5py example and pytables example
– Kamil Slowikowski
Sep 23 '16 at 13:15
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Intellij Idea 9/10, what folders to check into (or not check into) source control?
Our team has just moved from Netbeans to Intellij 9 Ultimate and need to know what files/folders should typically be excluded from source control as they are not "workstation portable", i.e.: they reference paths that only exist on one user's computer.
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How do I uniquely identify computers visiting my web site?
...wsers
are subject to “device fingerprinting” via the version and configuration information that they will transmit to websites upon request. We
implemented one possible fingerprinting algorithm, and collected these
fingerprints from a large sample of browsers that visited our test...
Why does C# have break if it's not optional? [duplicate]
...it fall-through behavior is often used to reduce the amount of code needed and often isn't an issue the first time that code is written. However, as code moves from the initial development phase into a maintenance phase, the code above can lead to subtle errors that are very hard to debug. These e...
Differences between utf8 and latin1
what is the difference between utf8 and latin1?
2 Answers
2
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MySQL select where column is not empty
...g:
select phone, phone2
from jewishyellow.users
where phone like '813%' and phone2<>''
Note that NULL value is interpreted as false.
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What's the difference between getRequestURI and getPathInfo methods in HttpServletRequest?
... lightweight front-controller. I need to match request paths to different handlers (actions) in order to choose the correct one.
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What's better to use in PHP, $array[] = $value or array_push($array, $value)?
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No benchmarks, but I personally feel like $array[] is cleaner to look at, and honestly splitting hairs over milliseconds is pretty irrelevant unless you plan on appending hundreds of thousands of strings to your array.
Edit: Ran this code:
$t = microtime(true);
$array = array();
for($i = 0; $i <...