大约有 43,000 项符合查询结果(耗时:0.0481秒) [XML]
Creating a simple XML file using python
...
These days, the most popular (and very simple) option is the ElementTree API,
which has been included in the standard library since Python 2.5.
The available options for that are:
ElementTree (Basic, pure-Python implementation of ElementTree. Part of ...
What are the differences between Clojure, Scheme/Racket and Common Lisp?
...ew, if possible, covering topics such as syntax, characteristics, features and resources.
4 Answers
...
A fast method to round a double to a 32-bit int explained
... a macro to round a double to a 32-bit int . I extracted the macro , and it looks like this:
3 Answers
...
PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
I did a lot of searching and also read the PHP $_SERVER docs . Do I have this right regarding which to use for my PHP scripts for simple link definitions used throughout my site?
...
What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?
Ruby has two different exceptions mechanisms: Throw/Catch and Raise/Rescue.
3 Answers
...
What does the exclamation mark mean in a Haskell declaration?
...s I try to learn Haskell using a real project to drive it. I don't understand what the exclamation mark in front of each argument means and my books didn't seem to mention it.
...
Find a Git branch containing changes to a given file
...file in one of them, but I'm not sure which one. Is there some kind of command I can run to find which branches contain changes to a certain file?
...
Convert .pem to .crt and .key
Can anyone tell me the correct way/command to extract/convert the certificate .crt and private key .key files from a .pem file? I just read they are interchangable, but not how.
...
What does the star operator mean, in a function call?
...
s = sum(1, 2)
The double star ** does the same, only using a dictionary and thus named arguments:
values = { 'a': 1, 'b': 2 }
s = sum(**values)
You can also combine:
def sum(a, b, c, d):
return a + b + c + d
values1 = (1, 2)
values2 = { 'c': 10, 'd': 15 }
s = sum(*values1, **values2)
w...
Is it safe to remove selected keys from map within a range loop?
...r key := range m {
if key.expired() {
delete(m, key)
}
}
And the language specification:
The iteration order over maps is not specified and is not guaranteed to be the same from one iteration to the next. If map entries that have not yet been reached are removed during iteratio...
