大约有 11,600 项符合查询结果（耗时：0.0287秒） [XML]
How can I repeat a character in Bash?
...
You can use:
printf '=%.0s' {1..100}
How this works:
Bash expands {1..100} so the command becomes:
printf '=%.0s' 1 2 3 4 ... 100
I've set printf's format to =%.0s which means that it will always print a single = no matter what argument it is given. Therefore it prints 100 =...
Install dependencies globally and locally using package.json
Using npm we can install the modules globally using -g option. How can we do this in the package.json file?
6 Answers
...
Can I have an IF block in DOS batch file?
In a DOS batch file we can only have 1 line if statement body? I think I found somewhere that I could use () for an if block just like the {} used in C-like programming languages, but it is not executing the statements when I try this. No error message either. This my code:
...
Why would a static nested interface be used in Java?
I have just found a static nested interface in our code-base.
11 Answers
11
...
What is the purpose of “return await” in C#?
... sneaky case when return in normal method and return await in async method behave differently: when combined with using (or, more generally, any return await in a try block).
Consider these two versions of a method:
Task<SomeResult> DoSomethingAsync()
{
using (var foo = new Foo())
{
...
What really is a deque in STL?
...ure used), and the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made by the operator [] to be done in constant time. In a linked list, arbitrary access should be O...
Is there YAML syntax for sharing part of a list or map?
...
The merge key type is probably what you want. It uses a special << mapping key to indicate merges, allowing an alias to a mapping (or a sequence of such aliases) to be used as an initializer to merge into a single mapping. Additionally, you can...
Join/Where with LINQ and Lambda
I'm having trouble with a query written in LINQ and Lambda. So far, I'm getting a lot of errors here's my code:
9 Answers
...
Why are primes important in cryptography?
... strikes me as a non-cryptographer: Why is it so important to use Prime numbers? What makes them so special in cryptography?
...
Use of class definitions inside a method in Java
...
This is called a local class.
2 is the easy one: yes, a class file will be generated.
1 and 3 are kind of the same question. You would use a local class where you never need to instantiate one or know about implementation details anywhere but in one method.
A typical use would be to create a t...