大约有 5,685 项符合查询结果（耗时：0.0427秒） [XML]
Which characters need to be escaped when using Bash?
... a different language (where you presumably already know how to quote). In Python: subprocess.Popen(['bash', '-c', 'printf "%q\0" "$@"', '_', arbitrary_string], stdin=subprocess.PIPE, stdout=subprocess.PIPE).communicate() will give you a properly shell-quoted version of arbitrary_string.
...
Mutable vs immutable objects
...ich is why many large numerical packages, such as the Numpy Array class in Python, allow for In-Place updates of large arrays. This would be important for application areas that make use of large matrix and vector operations. This large data-parallel and computationally intensive problems achieve a...
Default function arguments in Rust
...me(4)), but with the macro pattern matching you cannot (this is similar to Python's default argument rules).
You could also use an "arguments" struct and the From/Into traits:
pub struct FooArgs {
a: f64,
b: i32,
}
impl Default for FooArgs {
fn default() -> Self {
FooArgs {...
How does the Brainfuck Hello World actually work?
... then prints(‘.’) character with that ascii value. i.e for example in python:
chr(70+2) # prints 'H'
>+.
moves to 2nd cell increment 1 to its value 100+1 and prints(‘.’) its value i.e chr(101)
chr(101) #prints ‘e’
now there is no > or < in next piece so it takes present valu...
SQLAlchemy: Creating vs. Reusing a Session
...
Hi, @zzzeek. Thanks for excellent answer. I'm very new in python and several things I wanna clarify: 1) Do I understand correct when I create new "session" by calling Session() method it will create SQL Transaction, then transaction will be opened until I commit/rollback session? 2...
API Keys vs HTTP Authentication vs OAuth in a RESTful API
...hat makes sense. You probably want to use OAuth2 now. If your server is in Python (Django or Flask) take a look at github.com/omab/python-social-auth
– Sid
Aug 18 '15 at 19:43
...
Getting individual colors from a color map in matplotlib
...e where we make CSV representation for a custom colormap:
#! /usr/bin/env python3
import matplotlib
import numpy as np
vmin = 0.1
vmax = 1000
norm = matplotlib.colors.Normalize(np.log10(vmin), np.log10(vmax))
lognum = norm(np.log10([.5, 2., 10, 40, 150,1000]))
cdict = {
'red':
(
...
Is it good style to explicitly return in Ruby?
Coming from a Python background, where there is always a "right way to do it" (a "Pythonic" way) when it comes to style, I'm wondering if the same exists for Ruby. I've been using my own style guidelines but I'm thinking about releasing my source code, and I'd like it to adhere to any unwritten rule...
Determining type of an object in ruby
I'll use python as an example of what I'm looking for (you can think of it as pseudocode if you don't know Python):
5 Answe...
How to validate phone numbers using regex
...e number dataset:
PHP: https://github.com/giggsey/libphonenumber-for-php
Python: https://github.com/daviddrysdale/python-phonenumbers
Ruby: https://github.com/sstephenson/global_phone
C#: https://github.com/twcclegg/libphonenumber-csharp
Objective-C: https://github.com/iziz/libPhoneNumber-iOS
Java...