大约有 44,600 项符合查询结果（耗时：0.0467秒） [XML]
“Inner exception” (with traceback) in Python?
...
Python 2
It's simple; pass the traceback as the third argument to raise.
import sys
class MyException(Exception): pass
try:
raise TypeError("test")
except TypeError, e:
raise MyException(), None, sys.exc_info()[2]
Alway...
Property getters and setters
...
239
Setters and Getters apply to computed properties; such properties do not have storage in the i...
Add to Array jQuery
...
For JavaScript arrays, you use push().
var a = [];
a.push(12);
a.push(32);
For jQuery objects, there's add().
$('div.test').add('p.blue');
Note that while push() modifies the original array in-place, add() returns a new jQuery object, it does not modify the original one.
...
Peak signal detection in realtime timeseries data
...
1
2
Next
365
...
Call by name vs call by value in Scala, clarification needed
... => Int).
def callByValue(x: Int) = {
println("x1=" + x)
println("x2=" + x)
}
def callByName(x: => Int) = {
println("x1=" + x)
println("x2=" + x)
}
Now what happens when we call them with our side-effecting function?
scala> callByValue(something())
calling something
x1=1
x2=1
...
Bitwise operation and usage
... the lower 4 bits of an integer, you AND it with 15 (binary 1111) so:
201: 1100 1001
AND 15: 0000 1111
------------------
IS 9 0000 1001
The zero bits in 15 in that case effectively act as a filter, forcing the bits in the result to be zero as well.
In addition, >> and << ar...
SQL-Server: Is there a SQL script that I can use to determine the progress of a SQL Server backup or
...
12
Yes. If you have installed sp_who2k5 into your master database, you can simply run:
sp_who2k5 1...
What does the git index contain EXACTLY?
...he contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89437f2fdc80926e21c 0 .gitignore
100644 5529b198e8d14decbe4ad99db3f7fb632de0439d 0 .mailmap
The Racy git problem gives some more details on that structure:
The index is one of the most important data structures in gi...
INSERT IF NOT EXISTS ELSE UPDATE?
...
|
edited Jul 2 '14 at 6:34
answered Sep 3 '10 at 10:55
...