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Hexadecimal To Decimal in Shell Script
...nteger overflow error, e.g. echo $((077E9F2DBF49D100001#FF)) overflows the 64-bit integer limit of 2^64. bc handles this properly.
– roblogic
May 2 '18 at 1:04
...
What does it mean that Javascript is a prototype based language?
...veloper.mozilla.org/en/JavaScript/Guide/…
– pramodc84
Sep 28 '10 at 8:34
1
+1 for a great answe...
Why avoid increment (“++”) and decrement (“--”) operators in JavaScript?
... understand the difference between == and ===.
– greg84
Jan 19 '13 at 14:10
1
Exactly. There's an...
Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. Manifest definition do
...
84
I am using Newtonsoft.Json v6.0.3, but this is what I had to do in my Web.config file:
<dep...
Why are there no ++ and -- operators in Python?
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84
This original answer I wrote is a myth from the folklore of computing: debunked by Dennis Ritch...
What does -1 mean in numpy reshape?
...
84
Used to reshape an array.
Say we have a 3 dimensional array of dimensions 2 x 10 x 10:
r = nu...
Fast way of counting non-zero bits in positive integer
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I tried adapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of ...
How to update Python?
...ow, these answers are for the same bit-versions, and by bit-version I mean 64-bit vs. 32-bit. For example, these answers would apply to updating from 64-bit Python-2.7.10 to 64-bit Python-2.7.11, ie: the same bit-version. While it is possible to install two different bit versions of Python together,...
Reference — What does this symbol mean in PHP?
... |
-------------------------------------------
|Place Value | 128| 64| 32| 16| 8| 4| 2| 1|
-------------------------------------------
This representation of 1 Byte
1 + 2 + 4 + 8 + 16 + 32 + 64 + 128 = 255 (1 Byte)
A few examples for better understanding
The "AND" operator: &
...
How to create a GUID/UUID in Python
...tions such as '+','=', etc..
Instead of hexadecimal, I use a url-safe base64 string. The following does not conform to any UUID/GUID spec though (other than having the required amount of randomness).
import base64
import uuid
# get a UUID - URL safe, Base64
def get_a_uuid():
r_uuid = base64.u...