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Is there an equivalent for the Zip function in Clojure Core or Contrib?
...pling" in a manner similar to Haskell's
zipWith (\x y -> (x, y))
The idiomatic way to build a "tuple" in Clojure is to construct a short vector, as displayed above.
(Just for completeness, note that Haskell with some basic extensions does allow variable arity functions; using them requires a ...
How to determine MIME type of file in android?
...
First and foremost, you should consider calling MimeTypeMap#getMimeTypeFromExtension(), like this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap....
Better way to check variable for null or empty string?
... PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Unpacking array into separate variables in JavaScript
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Implementation of serious's idea.
http://jsfiddle.net/RichAyotte/6D2wP/
(function(a, b, c, d) {
console.log(a, b, c, d);
}.apply(this, ['a', 'b', 'c', 'd']));
share
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Matching an empty input box using CSS
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If only the field is required you could go with input:valid
#foo-thing:valid + .msg { visibility: visible!important; }
<input type="text" id="foo-thing" required="required">
<span class="msg" style="visibility: hidden;">Yay not empty</span>
S...
How to export all collections in MongoDB?
...ry_backup>
This way, you don't need to deal with all collections individually. Just specify the database.
Note that I would recommend against using mongodump/mongorestore for big data storages. It is very slow and once you get past 10/20GB of data it can take hours to restore.
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Print variables in hexadecimal or decimal format
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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How to test which port MySQL is running on and whether it can be connected to?
...Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1393/sshd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1859/master
tcp 0 0 123.189...
Xml Namespace breaking my xpath! [duplicate]
...en defined with a default namespace and this is adopted by all elements inside.
You therefore need to ignore the element namespace like so:
/*[local-name()='List']/*[local-name()='Fields]/*[local-name()='Field]
but this means that the xpath will pick up any other element with List - Fields - Fie...
Difference between global and device functions
...also called "kernels". It's the functions that you may call from the host side using CUDA kernel call semantics (<<<...>>>).
Device functions can only be called from other device or global functions. __device__ functions cannot be called from host code.
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