大约有 40,000 项符合查询结果（耗时：0.0212秒） [XML]
Are list-comprehensions and functional functions faster than “for loops”?
...ike map() , filter() and reduce() faster than a for loop? Why, technically, they run in a C speed , while the for loop runs in the python virtual machine speed ?.
...
Stateless vs Stateful - I could use some concrete information
...programming. I'm interested because I want to learn more about it, but I really can't find any good articles about it. I've read dozens of articles on the web which vaguely discuss the subject, or they're talking about web servers and sessions - which are also 'bout stateful vs stateless, but I'm in...
URLs: Dash vs. Underscore [closed]
...
Reasonable guess, but as it turns out, totally untrue. -1.
– Mark Amery
Feb 4 '15 at 23:29
...
assertEquals vs. assertEqual in python
...
I think this was tension between the "only one obvious way to do it" vs. "alias to make the overall code flow semantically". Personally I found I like to read
failIf(some_condition)
over
assertFalse(some_condition)
but liked
assertEqual(a, b)
over the other two (assertEquals(a, b) b...
$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
Some guy called one of my Snipplr submissions "crap" because I used if ($_SERVER['REQUEST_METHOD'] == 'POST') instead of if ($_POST)
...
Django queries - id vs pk
...ry key field i.e. you don't need to care whether the primary key field is called id or object_id or whatever.
It also provides more consistency if you have models with different primary key fields.
share
|
...
Case objects vs Enumerations in Scala
... deal with an Option[Currency] type that would clearly indicate there is really a matching problem and "encourage" the user of the API to sort it out him/herself.
To follow up on the other answers here, the main drawbacks of case objects over Enumerations are:
Can't iterate over all instances of t...
Performance of Find() vs. FirstOrDefault() [duplicate]
... answered Dec 25 '12 at 17:56
devshortsdevshorts
7,31133 gold badges4242 silver badges6666 bronze badges
...
Python extending with - using super() Python 3 vs Python 2
Originally I wanted to ask this question , but then I found it was already thought of before...
5 Answers
...
WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
...
It doesn't look like WITH CHECK is actually the default, it's only the default for new data. From msdn.microsoft.com/en-us/library/ms190273.aspx: "If not specified, WITH CHECK is assumed for new constraints, and WITH NOCHECK is assumed for re-enabled constraints."...