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How can I merge two hashes without overwritten duplicate keys in Ruby?
...sly, this is very rudimentary and assumes that hash1 doesn't have any keys called "hash2-originated-whatever" - you may be better off just adding a number to the key so it becomes key1, key2 and so on until you hit on one that isn't already in hash1. Also, I haven't done any ruby for a few months so...
In CoffeeScript how do you append a value to an Array?
...
If you are chaining calls then you want the append to return the array rather than it's length.
In this case you can use .concat([newElement])
Has to be [newElement] as concat is expecting an array like the one its concatenating to.
Not efficie...
API Keys vs HTTP Authentication vs OAuth in a RESTful API
... they are trying to do?
or all three?
If you just need to identify the caller to keep track of volume or number of API Calls, use a simple API Key. Bear in mind that if the user you have issued the API key shares it with someone else, they will be able to call your API as well.
But, if you need...
Why is an int in OCaml only 31 bits?
...
This is called a tagged pointer representation, and is a pretty common optimization trick used in many different interpreters, VMs and runtime systems for decades. Pretty much every Lisp implementation uses them, many Smalltalk VMs, ...
How to detect the swipe left or Right in Android?
...nd an OnTouchListener, detect what kind of swipe (touch) just happened and call specific methods for each kind.
public class SwipeListener implements View.OnTouchListener {
private int min_distance = 100;
private float downX, downY, upX, upY;
View v;
@Override
public boolean on...
Batch file to copy directories recursively
... you exact control of what you do in every nested subdirectory:
@echo off
call :treeProcess
goto :eof
:treeProcess
rem Do whatever you want here over the files of this subdir, for example:
copy *.* C:\dest\dir
for /D %%d in (*) do (
cd %%d
call :treeProcess
cd ..
)
exit /b
Windows Ba...
How to plot multiple functions on the same figure, in Matplotlib?
...
Nevermind, the default figure is automatically cleared after calling plt.show() so plotting again won't plot on the same graph.
– NoName
Dec 16 '19 at 5:24
...
How do I rename a column in a SQLite database table?
... around, I found this multiplatform (Linux | Mac | Windows) graphical tool called DB Browser for SQLite that actually allows one to rename columns in a very user friendly way!
Edit | Modify Table | Select Table | Edit Field. Click click! Voila!
However, if someone want to share a programmatic way ...
Safe characters for friendly url [closed]
...acters that are allowed in a URI but do not have a reserved
purpose are called unreserved. These include uppercase and lowercase
letters, decimal digits, hyphen, period, underscore, and tilde."
ALPHA DIGIT "-" / "." / "_" / "~"
Note that RFC 3986 lists fewer reserved punctuation marks th...
Why does pylint object to single character variable names?
...the maintenance team as to what the function could be doing, and how it is called, and what it returns. So in Python, you tend to use descriptive names:
def check_modality(name, mode, option_list):
checker = build_checker(name, mode)
return checker.check_option(option_list)
and you even a...