大约有 8,100 项符合查询结果（耗时：0.0357秒） [XML]
Test for equality among all elements of a single vector
I'm trying to test whether all elements of a vector are equal to one another. The solutions I have come up with seem somewhat roundabout, both involving checking length() .
...
Ternary operator is twice as slow as an if-else block?
I read everywhere that ternary operator is supposed to be faster than, or at least the same as, its equivalent if - else block.
...
How do I prompt a user for confirmation in bash script? [duplicate]
I want to put a quick "are you sure?" prompt for confirmation at the top of a potentially dangerous bash script, what's the easiest/best way to do this?
...
What is the (best) way to manage permissions for Docker shared volumes?
I've been playing around with Docker for a while and keep on finding the same issue when dealing with persistent data.
13 A...
Find a string by searching all tables in SQL Server Management Studio 2008
Is there any way to search for a string in all tables of a database in SQL Server Management Studio 2008?
8 Answers
...
How to run .APK file on emulator [duplicate]
I download an APK file and I want to run it on an Android emulator but I don't know how. Please help me. Thanks!
4 Answer...
How to make good reproducible pandas examples
Having spent a decent amount of time watching both the r and pandas tags on SO, the impression that I get is that pandas questions are less likely to contain reproducible data. This is something that the R community has been pretty good about encouraging, and thanks to guides like this , newc...
How to test if a string is JSON or not?
I have a simple AJAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
...
Calculate distance between two points in google maps V3
How do you calculate the distance between two markers in Google maps V3? (Similar to the distanceFrom function inV2.)
15 ...