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String concatenation: concat() vs “+” operator
...g.String cat(java.lang.String, java.lang.String);
Code:
0: new #2; //class java/lang/StringBuilder
3: dup
4: invokespecial #3; //Method java/lang/StringBuilder."<init>":()V
7: aload_1
8: invokevirtual #4; //Method java/lang/StringBuilder.append:(Ljava/lang/St...
Changing a specific column name in pandas DataFrame
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362
A one liner does exist:
In [27]: df=df.rename(columns = {'two':'new_name'})
In [28]: df
Out[28...
Remove empty strings from a list of strings
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12 Answers
12
Active
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In a javascript array, how do I get the last 5 elements, excluding the first element?
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362
You can call:
arr.slice(Math.max(arr.length - 5, 1))
If you don't want to exclude the first e...
How do I see active SQL Server connections?
I am using SQL Server 2008 Enterprise. I want to see any active SQL Server connections, and the related information of all the connections, like from which IP address, connect to which database or something.
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HTTP test server accepting GET/POST requests
...?key=val Returns given response headers.
https://httpbin.org/redirect/:n 302 Redirects n times.
https://httpbin.org/relative-redirect/:n 302 Relative redirects n times.
https://httpbin.org/cookies Returns cookie data.
https://httpbin.org/cookies/set/:name/:value Sets a simple cookie.
https://httpbin...
Serialize form data to JSON [duplicate]
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241
Here's a function for this use case:
function getFormData($form){
var unindexed_array = $...
Change Active Menu Item on Page Scroll?
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207
It's done by binding to the scroll event of the container (usually window).
Quick example:
/...
jQuery - get a list of values of an attribute from elements of a class
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answered May 2 '10 at 16:02
KobiKobi
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