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Change text color based on brightness of the covered background area?
... the element's (or ancestor's) background color, you can use this function from the article to determine a suitable foreground color:
function getContrastYIQ(hexcolor){
hexcolor = hexcolor.replace("#", "");
var r = parseInt(hexcolor.substr(0,2),16);
var g = parseInt(hexcolor.substr(2,2)...
How do you get the Git repository's name in some Git repository?
...a lot of information about original remote that you cloned your repository from, and it will contain original clone URL.
If, however, you removed link to original remote using git remote rm origin, or if you created that repository using git init, such information is simply impossible to obtain - i...
How can two strings be concatenated?
...("GAD", "AB")
library(stringr)
str_c(tmp, collapse = ",")
# [1] "GAD,AB"
From its documentation file description, it fits this problem nicely.
To understand how str_c works, you need to imagine that you are building up a matrix of strings. Each input argument forms a column, and is expanded to...
Does use of final keyword in Java improve the performance?
...le objects, on the other hand, can have arbitrarily complex state spaces.. From my personal experience, using the keyword final should highlight the intent of the developer to lean toward immutability, not to "optimize" code. I encourage you to read this chapter, fascinating !
–...
(SC) DeleteService FAILED 1072
...ocation in regedit:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
From here, you will see a folder for every service on your machine. Simply delete the folder for the service you wish, and you're done.
N.B: Stop the service before you try this.
...
Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
...d a custom one. also, in this case there is literally nothing to be gained from using a static "constructor" instead of just doing the validation in the real constructor (since it's part of the class anyway). it's even WORSE, since you can now get a null return value, opening up for NREs and "what t...
How to print a list of symbols exported from a dynamic library
...elf to the requested “a simple way to list the symbols that are exported from a dylib file”. “nm -gU ….dylib” is, however.
– Slipp D. Thompson
Apr 27 '16 at 4:32
ad...
Get the current git hash in a Python script
...s a good way of creating a human-presentable "version number" of the code. From the examples in the documentation:
With something like git.git current tree, I get:
[torvalds@g5 git]$ git describe parent
v1.0.4-14-g2414721
i.e. the current head of my "parent" branch is based on v1.0.4, but since it...
Presenting a UIAlertController properly on an iPad using iOS 8
...
You can present a UIAlertController from a popover by using UIPopoverPresentationController.
In Obj-C:
UIViewController *self; // code assumes you're in a view controller
UIButton *button; // the button you want to show the popup sheet from
UIAlertController...
Finding differences between elements of a list
...
You can use itertools.tee and zip to efficiently build the result:
from itertools import tee
# python2 only:
#from itertools import izip as zip
def differences(seq):
iterable, copied = tee(seq)
next(copied)
for x, y in zip(iterable, copied):
yield y - x
Or using iterto...