大约有 8,300 项符合查询结果（耗时：0.0320秒） [XML]
What is a Y-combinator? [closed]
A Y-combinator is a computer science concept from the “functional” side of things. Most programmers don't know much at all about combinators, if they've even heard about them.
...
Why use apparently meaningless do-while and if-else statements in macros?
In many C/C++ macros I'm seeing the code of the macro wrapped in what seems like a meaningless do while loop. Here are examples.
...
nonlocal keyword in Python 2.x
...x. How should one access nonlocal variables in closures in these versions of python?
10 Answers
...
How to prevent rm from reporting that a file was not found?
I am using rm within a BASH script to delete many files. Sometimes the files are not present, so it reports many errors. I do not need this message. I have searched the man page for a command to make rm quiet, but the only option I found is -f , which from the description, "ignore nonexistent f...
Difference between Divide and Conquer Algo and Dynamic Programming
What is the difference between Divide and Conquer Algorithms and Dynamic Programming Algorithms? How are the two terms different? I do not understand the difference between them.
...
How can I find all of the distinct file extensions in a folder hierarchy?
On a Linux machine I would like to traverse a folder hierarchy and get a list of all of the distinct file extensions within it.
...
Difference between Big-O and Little-O Notation
What is the difference between Big-O notation O(n) and Little-O notation o(n) ?
4 Answers
...
Convert Django Model object to dict with all of the fields intact
How does one convert a Django Model object to a dict with all of its fields? All ideally includes foreign keys and fields with editable=False .
...
What are all the common ways to read a file in Ruby?
What are all the common ways to read a file in Ruby?
10 Answers
10
...
UIButton Image + Text IOS
...
I see very complicated answers, all of them using code. However, if you are using Interface Builder, there is a very easy way to do this:
Select the button and set a title and an image. Note that if you set the background instead of the image then the image wi...