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Right way to reverse pandas.DataFrame?
...ata.Odd[idx])
You are getting an error because reversed first calls data.__len__() which returns 6. Then it tries to call data[j - 1] for j in range(6, 0, -1), and the first call would be data[5]; but in pandas dataframe data[5] means column 5, and there is no column 5 so it will throw an exceptio...
Is Javascript a Functional Programming Language?
...e are closures, and higher order functions, does Javascript deserve to be called a Functional Programming language? The main thing I think it lacks is Pure Functions, and it doesn't 'feel' like other functional languages, like lisp (although thats not really a good reason for it not to be a functio...
implements Closeable or implements AutoCloseable
...small example
public class TryWithResource {
public static void main(String[] args) {
try (TestMe r = new TestMe()) {
r.generalTest();
} catch(Exception e) {
System.out.println("From Exception Block");
} finally {
System.out.println("...
Get the name of an object's type
...ion (.{1,})\(/;
var results = (funcNameRegex).exec((this).constructor.toString());
return (results && results.length > 1) ? results[1] : "";
};
Now, all of your objects will have the function, getName(), that will return the name of the constructor as a string. I have tested this i...
Is there a best practice for generating html with javascript
...re going to feel the performance and maintenance impact by either building strings or creating DOM objects.
Templating isn't all that immature, and you're seeing it popup in most of the major Javascript frameworks.
Here's an example in JQuery Template Plugin that will save you the performance hit,...
Build query string for System.Net.HttpClient get
...s correct?
Yes.
Is there any simple api available to build the query string that
doesn't involve building a name value collection and url encoding
those and then finally concatenating them?
Sure:
var query = HttpUtility.ParseQueryString(string.Empty);
query["foo"] = "bar<>&-ba...
In a javascript array, how do I get the last 5 elements, excluding the first element?
... huge javascript minified file if your trying to do it from your browser.
_.slice(_.rest(arr), -5)
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How best to determine if an argument is not sent to the JavaScript function
.... On the other hand, the comparison === undefined might be faster than the string comparison. My tests seem to indicate that you're right, though: x === undefined needed ~1.5x the time of typeof x === 'undefined'
– Christoph
Jan 4 '09 at 21:26
...
What is the official “preferred” way to install pip and virtualenv systemwide?
...here/how do you install setuptools-0.8? Looks like you are just grabbing ez_setup.py for a "lightweight version" of getting pip. I'd do the same but fear that it will break in the near future and I'll get stuck here again (like I always do)
– Steven Lu
Jul 13 '...
How to check if a file contains a specific string using Bash
I want to check if a file contains a specific string or not in bash. I used this script, but it doesn't work:
11 Answers
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