大约有 43,062 项符合查询结果（耗时：0.0307秒） [XML]
Why does the C preprocessor interpret the word “linux” as the constant “1”?
...essor in GCC interpret the word linux (small letters) as the constant 1 ?
5 Answers
...
Extracting the last n characters from a string in R
...
15 Answers
15
Active
...
How do I modify fields inside the new PostgreSQL JSON datatype?
...
21 Answers
21
Active
...
Check if all elements in a list are identical
...
General method:
def checkEqual1(iterator):
iterator = iter(iterator)
try:
first = next(iterator)
except StopIteration:
return True
return all(first == rest for rest in iterator)
One-liner:
def checkEqual2(iterator):
r...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...a tuple:
def foo(*args):
for a in args:
print(a)
foo(1)
# 1
foo(1,2,3)
# 1
# 2
# 3
The **kwargs will give you all
keyword arguments except for those corresponding to a formal parameter as a dictionary.
def bar(**kwargs):
for a in kwargs:
print(a, kwargs[a])
...
JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
... in large commercial web apps, support for EXIF orientation can be spotty 1 . The same source also provides a nice summary of the 8 different orientations a JPEG can have:
...
Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P
...ervers. Before the change over we had a JAR that was running fine on Java 1.7 x64 along with JRE 7. When we moved over to the new server our JAR was running alright, but then one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I...
Twitter API returns error 215, Bad Authentication Data
...
15 Answers
15
Active
...
What's the difference between a single precision and double precision floating point operation?
...
11 Answers
11
Active
...