大约有 10,940 项符合查询结果（耗时：0.0324秒） [XML]
Why is #!/usr/bin/env bash superior to #!/bin/bash?
...y on non-Linux systems. For example, on my OpenBSD system, it's in /usr/local/bin, since it was installed as an optional package.
If you are absolutely sure bash is in /bin and will always be, there's no harm in putting it directly in your shebang—but I'd recommend against it because scripts and...
adding noise to a signal in python
...
You can generate a noise array, and add it to your signal
import numpy as np
noise = np.random.normal(0,1,100)
# 0 is the mean of the normal distribution you are choosing from
# 1 is the standard deviation of the normal distri...
Instance attribute attribute_name defined outside __init__
I split up my class constructor by letting it call multiple functions, like this:
6 Answers
...
Get the IP address of the remote host
...em.Web.HttpRequest class, which contains ServerVariables property which can provide us the IP address from REMOTE_ADDR property value.
...
Python group by
...
How can this be done if the input tuple has one key and two or more values, like this: [('11013331', 'red', 'KAT'), ('9085267', 'blue' 'KAT')] where the last element of tuple is key and the first two as value. Result should be li...
Difference between WebStorm and PHPStorm
...es/SQL.
Their forum also has quite few answers for such question.
Basically: PhpStorm = WebStorm + PHP + Database support
WebStorm comes with certain (mainly) JavaScript oriented plugins bundled by default while they need to be installed manually in PhpStorm (if necessary).
At the same time: ...
Should the folders in a solution match the namespace?
... are suffixed with 'Exception' so an additional namespace is redundant. It can also get messy having a part of the namespace with the word Exception (can lead to confusing System.Exception). However, organizing them into folders is quite helpful.
– phillipwei
J...
How do I revert a Git repository to a previous commit?
...'t published any of these commits, simply reset:
# This will destroy any local modifications.
# Don't do it if you have uncommitted work you want to keep.
git reset --hard 0d1d7fc32
# Alternatively, if there's work to keep:
git stash
git reset --hard 0d1d7fc32
git stash pop
# This saves the modific...
AJAX POST and Plus Sign ( + ) — How to Encode?
...ntents of a form field via AJAX to a PHP script and using JavaScript to escape(field_contents) . The problem is that any plus signs are being stripped out and replaced by spaces. How can I safely 'encode' the plus sign and then appropriately 'decode' it on the PHP side?
...
How do I create a parameterized SQL query? Why Should I?
...ries (prepared statements in some circles) to prevent input like this from causing damage:
';DROP TABLE bar;--
Try putting that in your fuz variable (or don't, if you value your bar table). More subtle and damaging queries are possible as well.
Here's an example of how you do parameters with...