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Creating a new column based on if-elif-else condition
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To formalize some of the approaches laid out above:
Create a function that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
return va...
Ternary operation in CoffeeScript
...a = if true then 5 else 10
a = if false then 5 else 10
You can see more about expression examples here.
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MIN and MAX in C
...re are MIN and MAX defined in C, if at all?
They aren't.
What is the best way to implement these, as generically and type safe as possible (compiler extensions/builtins for mainstream compilers preferred).
As functions. I wouldn't use macros like #define MIN(X, Y) (((X) < (Y)) ? (X) : (Y)...
Add x and y labels to a pandas plot
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The df.plot() function returns a matplotlib.axes.AxesSubplot object. You can set the labels on that object.
ax = df2.plot(lw=2, colormap='jet', marker='.', markersize=10, title='Video streaming dropout by category')
ax.set_xlabel("x label")
ax.set_ylabel("y label")
...
How to add JTable in JPanel with null layout?
I want to add JTable into JPanel whose layout is null . JPanel contains other components. I have to add JTable at proper position.
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Python csv string to array
Anyone know of a simple library or function to parse a csv encoded string and turn it into an array or dictionary?
10 Answe...
How can I use an array of function pointers?
...Array of Function pointers), with the syntax detailed.
int sum(int a, int b);
int subtract(int a, int b);
int mul(int a, int b);
int div(int a, int b);
int (*p[4]) (int x, int y);
int main(void)
{
int result;
int i, j, op;
p[0] = sum; /* address of sum() */
p[1] = subtract; /* address of...
How to get the HTML for a DOM element in javascript
...uld create a wrapping element on the fly:
var target = document.getElementById('myElement');
var wrap = document.createElement('div');
wrap.appendChild(target.cloneNode(true));
alert(wrap.innerHTML);
I am cloning the element to avoid having to remove and reinsert the element in the actual documen...
How to get svn remote repository URL?
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Try:
svn info .
This should give some information about the current working copy, including the remote URL.
From the manual, an example output is:
$ svn info foo.c
Path: foo.c
Name: foo.c
URL: http://svn.red-bean.com/repos/test/foo.c
Repository Root: http://svn.red-...
Simple (non-secure) hash function for JavaScript? [duplicate]
...e. tens of lines of code, not hundreds of lines) hash function written in (browser-compatible) JavaScript? Ideally I'd like something that, when passed a string as input, produces something similar to the 32 character hexadecimal string that's the typical output of MD5, SHA1, etc. It doesn't have ...