大约有 31,500 项符合查询结果（耗时：0.0430秒） [XML]
How to use a decimal range() step value?
...y([ 0. , 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9])
If you really want to use a floating-point step value, you can, with numpy.arange.
>>> import numpy as np
>>> np.arange(0.0, 1.0, 0.1)
array([ 0. , 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9])
Floating-p...
How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...ndition is false */ ;
syntax is not a "shorthand if" operator (the ? is called the conditional operator) because you cannot execute code in the same manner as if you did:
if (condition) {
/* condition is true, do something like echo */
}
else {
/* condition is false, do something else */
...
HTTP could not register URL http://+:8000/HelloWCF/. Your process does not have access rights to thi
...ced the problem. I created the simplest WCF service. The listing of code: (all the code in one file)
9 Answers
...
/bin/sh: pushd: not found
...d by child processes. (A hypothetical pushd command might do the chdir(2) call and then start a new shell, but ... it wouldn't be very usable.) pushd is a shell builtin, just like cd.
So, either change your script to start with #!/bin/bash or store the current working directory in a variable, do yo...
Git/GitHub can't push to master
...TTP", which I wasn't. Git used to have a "dumb HTTP" protocol which didn't allow pushing before the "smart HTTP" that GitHub uses was introduced - either could be used over either http or https. The differences between the transfer protocols used by Git are explained in the link below.)
If you want...
What is the purpose of “&&” in a shell command?
...
You may notice I've used the word "intent" - that's for good reason. Not all programs have the same behavior, so for this to work, you need to understand what the program considers a "failure" and how it handles it by reading the documentation and, if necessary, the source code.
Your shell consid...
How can I check in a Bash script if my local Git repository has changes?
... Hi, that was one of the best answers on a question, you just gave me all information that I needed and that others my need as well :). I'll just need the last one, "something has changed" :) and you were right, I copied it.
– kmindi
Feb 28 '11 at 15:34
...
console.log javascript [Function]
...
If it's a user defined function you can use:
console.log(callback.toString());
Otherwise you'll just get something like [native code] since built in functions are not written in JavaScript.
Example:
function x(){}
// Prints "function x(){}"
(function(callback){ console.log(call...
SQL Server reports 'Invalid column name', but the column is present and the query works through mana
...ou are using profiler to reproduce performance issues, remember to include all the set options, particularly ARITHABORT to truly duplicate the query (and it's cached plan)
– Nick.McDermaid
May 18 '16 at 1:15
...
How do I format a date with Dart?
...
You can use the intl package (installer) to format dates.
For en_US formats, it's quite simple:
import 'package:intl/intl.dart';
main() {
final DateTime now = DateTime.now();
final DateFormat formatter = DateFormat('yyyy-MM-dd');
final String formatted...