大约有 41,729 项符合查询结果（耗时：0.0364秒） [XML]
Get the subdomain from a URL
Getting the subdomain from a URL sounds easy at first.
16 Answers
16
...
How to find if a given key exists in a C++ std::map
I'm trying to check if a given key is in a map and somewhat can't do it:
14 Answers
14...
how to remove the dotted line around the clicked a element in html
I found that if there is a a link in the page which does not link to a new page,then when user click it,there will be a dotted line around the element,it will only disappear when user click anything else in the page,how to remove this?
...
How to succinctly write a formula with many variables from a data frame?
Suppose I have a response variable and a data containing three covariates (as a toy example):
6 Answers
...
Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
The top line in all of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I ...
Why do we need virtual functions in C++?
I'm learning C++ and I'm just getting into virtual functions.
26 Answers
26
...
Join a list of items with different types as string in Python
I need to join a list of items. Many of the items in the list are integer values returned from a function; i.e.,
9 Answ...
Getting root permissions on a file inside of vi? [closed]
Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type
10 Answers...
How to declare an array in Python?
How do I declare an array in Python ?
16 Answers
16
...
Understanding the Gemfile.lock file
After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean?
...