Questions

How do I change the size of figures drawn with Matplotlib?

How do I change the size of figure drawn with Matplotlib?

Renaming column names in Pandas

I want to change the column labels of a Pandas DataFrame from ``` ['$a', '$b', '$c', '$d', '$e'] ``` to ``` ['a', 'b', 'c', 'd', 'e'] ```

28 Jul at 09:10

Iterating over dictionaries using 'for' loops

``` d = {'x': 1, 'y': 2, 'z': 3} for key in d: print(key, 'corresponds to', d[key]) ``` How does Python recognize that it needs only to read the `key` from the dictionary? Is `key` a special key...

1 Apr at 00:48

How do I push a new local branch to a remote Git repository and track it too?

How do I: 1. Create a local branch from another branch (via git branch or git checkout -b). 2. Push the local branch to the remote repository (i.e. publish), but make it trackable so that git pull an...

Loop (for each) over an array in JavaScript

How can I loop through all the entries in an array using JavaScript?

How do I check whether a file exists without exceptions?

How do I check whether a file exists or not, without using the [try](https://docs.python.org/3.6/reference/compound_stmts.html#try) statement?

27 Mar at 19:42

How do I UPDATE from a SELECT in SQL Server?

In , it is possible to insert rows into a table with an `INSERT.. SELECT` statement: ``` INSERT INTO Table (col1, col2, col3) SELECT col1, col2, col3 FROM other_table WHERE sql = 'cool' ``` Is it a...

1 May at 16:21

Limiting floats to two decimal points

I want `a` to be rounded to . I tried using [round](https://docs.python.org/2/library/functions.html#round), but I get: ``` >>> a 13.949999999999999 >>> round(a, 2) 13.949999999999999 ``` --- [How...

How do I generate random integers within a specific range in Java?

How do I generate a random `int` value in a specific range? The following methods have bugs related to integer overflow: ``` randomNum = minimum + (int)(Math.random() * maximum); // Bug: `randomNum` c...

2 Dec at 14:6

How do I find out which process is listening on a TCP or UDP port on Windows?

How do I find out which process is listening on a TCP or UDP port on Windows?

24 Jul at 23:15