大约有 48,000 项符合查询结果（耗时：0.0648秒） [XML]
Extract substring in Bash
...
If x is constant, the following parameter expansion performs substring extraction:
b=${a:12:5}
where 12 is the offset (zero-based) and 5 is the length
If the underscores around the digits are the only ones in the input, y...
How do I assign an alias to a function name in C++?
...
There are different approaches:
With C++11 with non-template non-overloaded functions you can simply use:
const auto& new_fn_name = old_fn_name;
If this function has multiple overloads you should use static_cast:
const auto&...
Where does the .gitignore file belong?
...
Put .gitignore in the working directory. It doesn't work if you put it in the .git (repository) directory.
$ ls -1d .git*
.git
.gitignore
share
|
improve this answer
|...
Docker - a way to give access to a host USB or serial device?
...
Still doesn't work if the USB device is connected after Docker is already running.
– Franklin Dattein
Oct 25 '16 at 19:38
...
How to check whether an object has certain method/property?
...into it.
Type.GetMethod(string name) will throw an AmbiguousMatchException if there is more than one method with that name, so we better handle that case
public static bool HasMethod(this object objectToCheck, string methodName)
{
try
{
var type = objectToCheck.GetType();
re...
How to find the files that are created in the last hour in unix
...
If the dir to search is srch_dir then either
$ find srch_dir -cmin -60 # change time
or
$ find srch_dir -mmin -60 # modification time
or
$ find srch_dir -amin -60 # access time
shows files created, modified or access...
How do I specify the platform for MSBuild?
I am trying to use MSBuild to build a solution with a specified target platform (I need both binaries, x86 and x64). This is how I tried it:
...
@Nullable annotation usage
...
It makes it clear that the method accepts null values, and that if you override the method, you should also accept null values.
It also serves as a hint for code analyzers like FindBugs. For example, if such a method dereferences its argument without checking for null first, FindBugs wil...
How to get next/previous record in MySQL?
...
This is not solution because if you remove row from "foo", what will happen? :P
– Valentin Hristov
Feb 24 '14 at 8:36
...
How do I execute a Git command without being in the repository?
...ccepted answer? This will use the current dir as work tree and use the specified .git for history, which is completely wrong. If you do not just show log, for example, git status. -C is the correct way to go.
– Wang
Mar 19 at 18:11
...