大约有 41,000 项符合查询结果(耗时:0.0641秒) [XML]
Find the index of a dict within a list, by matching the dict's value
...
tom_index = next((index for (index, d) in enumerate(lst) if d["name"] == "Tom"), None)
# 1
If you need to fetch repeatedly from name, you should index them by name (using a dictionary), this way get operations would be O(1) time. An idea:
def buil...
Create a branch in Git from another branch
...you've posted, have a look at Git Flow.
It's a set of scripts he created for that workflow.
But to answer your question:
$ git checkout -b myFeature dev
Creates MyFeature branch off dev. Do your work and then
$ git commit -am "Your message"
Now merge your changes to dev without a fast-forwar...
How different is Objective-C from C++? [closed]
...een Objective-C and C++ in terms of the syntax, features, paradigms, frameworks and libraries?
7 Answers
...
How to forward declare a template class in namespace std?
and used that function in my main. I get errors. Of course, I know that there are more template params for std::list (allocator I think). But, that is beside the point. Do I have to know the full template declaration of a template class to be able to forward declare it?
...
convert pfx format to p12
I need to export a .pfx format certificate (from windows mmc) to .p12 to use in another application. I cant find a way to do this. Can anyone suggest a method?
...
Calculating Pearson correlation and significance in Python
I am looking for a function that takes as input two lists, and returns the Pearson correlation , and the significance of the correlation.
...
AngularJs event to call after content is loaded
...er page content is loaded. I read about $viewContentLoaded and it doesn't work for me. I am looking for something like
15 ...
Why can't I define a default constructor for a struct in .NET?
In .NET, a value type (C# struct ) can't have a constructor with no parameters. According to this post this is mandated by the CLI specification. What happens is that for every value-type a default constructor is created (by the compiler?) which initialized all members to zero (or null ).
...
Where is the documentation for the values() method of Enum?
...he compiler.
Documented in three places :
Enum Types, from The Java Tutorials
The compiler automatically adds some special methods when it creates
an enum. For example, they have a static values method that returns an
array containing all of the values of the enum in the order they are
...
How do I implement a callback in PHP?
...ble" interchangeably, however, "callback" traditionally refers to a string or array value that acts like a function pointer, referencing a function or class method for future invocation. This has allowed some elements of functional programming since PHP 4. The flavors are:
$cb1 = 'someGlobalFunctio...
