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What is the exact meaning of IFS=$'\n'?
...cessary. Run new IFS in subshell to avoid overriding the default IFS:
ar=(123 321); ( IFS=$'\n'; echo ${ar[*]} )
Besides I don't really believe you recover the old IFS fully. You should double quote it to avoid line breaking such as OLDIFS="$IFS".
...
How to parse an RSS feed using JavaScript?
...ely to work.
My workaround will probably be to parse the RSS feed through PHP and allow the javascript to access my PHP rather than trying to access the end-destination feed itself.
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In Node.js, how do I “include” functions from my other files?
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123
Create two js files
// File cal.js
module.exports = {
sum: function(a,b) {
return...
How to store arrays in MySQL?
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Use database field type BLOB to store arrays.
Ref: http://us.php.net/manual/en/function.serialize.php
Return Values
Returns a string containing a byte-stream representation of value that
can be stored anywhere.
Note that this is a binary string which may include null bytes, and
needs ...
Algorithm to return all combinations of k elements from n
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Usage:
var result = Combinations(new[] { 1, 2, 3, 4, 5 }, 3);
Result:
123
124
125
134
135
145
234
235
245
345
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What's the difference between interface and @interface in java?
...above annotation, you could use code like this:
@MyAnnotation(
value="123",
name="Jakob",
age=37,
newNames={"Jenkov", "Peterson"}
)
public class MyClass {
}
Reference - http://tutorials.jenkov.com/java/annotations.html
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Linux: compute a single hash for a given folder & contents?
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123
One possible way would be:
sha1sum path/to/folder/* | sha1sum
If there is a whole directory ...
C# vs Java Enum (for those new to C#)
...t threw it in to show usage
double earthWeight = double.Parse("123");
double earthMass = earthWeight / pEarth.SurfaceGravity();
foreach (Planet p in Planet.Values)
Console.WriteLine($"Your weight on {p} is {p.SurfaceWeight(mass)}");
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How to return result of a SELECT inside a function in PostgreSQL?
...guity
END
$func$ LANGUAGE plpgsql;
Call:
SELECT * FROM word_frequency(123);
Explanation:
It is much more practical to explicitly define the return type than simply declaring it as record. This way you don't have to provide a column definition list with every function call. RETURNS TABLE is ...
Get last n lines of a file, similar to tail
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123
This may be quicker than yours. Makes no assumptions about line length. Backs through the fi...