大约有 7,000 项符合查询结果（耗时：0.0127秒） [XML]
Can two Java methods have same name with different return types? [duplicate]
...he return types are compatible.
For example:
public class A
{
Object foo() { return null; }
}
public class B
extends A
{
String foo() { return null; }
}
share
|
improve this answer
...
How do I profile memory usage in Python?
...;>> asizeof.asizeof(tuple('bcd'))
200
>>> asizeof.asizeof({'foo': 'bar', 'baz': 'bar'})
400
>>> asizeof.asizeof({})
280
>>> asizeof.asizeof({'foo':'bar'})
360
>>> asizeof.asizeof('foo')
40
>>> asizeof.asizeof(Bar())
352
>>> asizeof.asizeof(...
Shell Script — Get all files modified after
...the last 7 days, use "+7".
find . -mtime -7 -print0 | xargs -0 tar -cjf /foo/archive.tar.bz2
As this page warns, xargs can cause the tar command to be executed multiple times if there are a lot of arguments, and the "-c" flag could cause problems. In that case, you would want this:
find . -mtim...
How to empty a list?
...ing that alist truly is a list. Say you got alist returned from a function foo(). You thought foo returned a list but indeed it returned a None. Using alist = [] cannot catch that mistake.
– aafulei
Sep 6 '19 at 2:05
...
MYSQL Truncated incorrect DOUBLE value
...me. A 'select * from t where id = 6503' worked okay but 'update t set a = "foo" where id = 6503' resulted in ERROR 1292 (22007): Truncated incorrect DOUBLE value: '234805557438#'. id looks like integer but was a varchar. Quoting the value in the update solved the problem. 'update t set a = "foo" ...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
...will wrap anything you give it. If you want to wrap an instance of 'struct foo' called 'bar', you'd do '[NSValue valueWithBytes: &bar objCType: @encode(struct foo)];'
– Jim Dovey
May 24 '09 at 20:44
...
How to call one shell script from another shell script?
... level of your project's directory - if ./.git/hooks/pre-commit has source foo, you had better have ./foo!
– Athan Clark
Jun 6 '15 at 2:11
16
...
Ruby - test for array
...
Using Array(foo) is much more efficient than [*foo]
– gregschlom
Jul 19 '16 at 18:41
add a comment
...
How to find the Git commit that introduced a string in any branch?
...-source --all
Here's an example using -G to find occurrences of function foo() {:
git log -G "^(\s)*function foo[(][)](\s)*{$" --source --all
share
|
improve this answer
|
...
Is arr.__len__() the preferred way to get the length of an array in Python?
...l, builtin function; __len__() is a method that object can implement. len(foo) usually ends up calling foo.__len__().
– Tim Lesher
Feb 5 '09 at 21:33
13
...