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Convert data.frame column to a vector?
...atomic column, you could use [[, or somewhat confusingly (to me) you could do aframe[,2] which returns a vector, not a sublist.
So try running this sequence and maybe things will be clearer:
avector <- as.vector(aframe['a2'])
class(avector)
avector <- aframe[['a2']]
class(avector)
avector...
Send POST data using XMLHttpRequest
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The code below demonstrates on how to do this.
var http = new XMLHttpRequest();
var url = 'get_data.php';
var params = 'orem=ipsum&name=binny';
http.open('POST', url, true);
//Send the proper header information along with the request
http.setRequestHeader('...
What is the proper way to URL encode Unicode characters?
I know of the non-standard %uxxxx scheme but that doesn't seem like a wise choice since the scheme has been rejected by the W3C.
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Scanner vs. StringTokenizer vs. String.Split
...ing, pulling out data of different types. It's very flexible, but arguably doesn't give you the simplest API for simply getting an array of strings delimited by a particular expression.
String.split() and Pattern.split() give you an easy syntax for doing the latter, but that's essentially all that t...
How to merge dictionaries of dictionaries?
...accepting duplicate but consistent entries (something no other answer here does....)
assuming you don't have huge numbers of entries a recursive function is easiest:
def merge(a, b, path=None):
"merges b into a"
if path is None: path = []
for key in b:
if key in a:
...
How to properly match varargs in Mockito
...it compatible with any var arg types (e.g. String ..., Integer ..., etc.), do an explicit casting. For example, if you have doSomething(Integer number, String ... args) you can do the mock/stub code with something like when(mock).doSomething(eq(1), (String) anyVarargs()). That should take care of th...
Notepad++ show open files on the left
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Settings > Preferences > tab General > Document List Panel > check Show
Credit to anonymous coward
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Can we instantiate an abstract class?
... explaining, and gave this example, as a unique counterexample, I think he doesn't know what he's talking about, though.
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What techniques can be used to define a class in JavaScript, and what are their trade-offs?
... but, if I'm not mistaken, there are at least a couple of ways to go about doing that. What would be the syntax and why would it be done in that way?
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How to assign the output of a Bash command to a variable? [duplicate]
...otice no spaces after the equals sign.
Also as Mr. Weiss points out; you don't assign to $pwd, you assign to pwd.
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