大约有 47,000 项符合查询结果（耗时：0.0289秒） [XML]
Test if lists share any items in python
... generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) & set(b))
Because sets are stored using a hash table in Python, searching them is O(1) (see here for...
How does a Java HashMap handle different objects with the same hash code?
As per my understanding I think:
14 Answers
14
...
How to capture Curl output to a file?
... URL's in the format about is called myfile.txt so I do curl -K myfile.txt and it runs though each one but I don't get the output into any file.
– Tony
Dec 6 '12 at 0:48
24
...
How to get unique device hardware id in Android? [duplicate]
How to get the unique device ID in Android which cannot be changed when performing a phone reset or OS update?
3 Answers
...
Combining Multiple Commits Into One Prior To Push
... ready. Or you might be making several commits locally while disconnected, and you push them all once you're connected again. There's no reason to limit yourself to one commit per push.
I generally find that it's a good idea to keep each commit a single, logical, coherent change, that includes eve...
Check whether variable is number or string in JavaScript
...
If you're dealing with literal notation, and not constructors, you can use typeof:.
typeof "Hello World"; // string
typeof 123; // number
If you're creating numbers and strings via a constructor, such as var foo = new String("foo"), you should keep in m...
Can grep show only words that match search pattern?
... output. This is the default
when there is only one file (or only standard input) to search.
-o, --only-matching
Print only the matched (non-empty) parts of a matching line,
with each such part on a separate output line.
...
How do I implement __getattribute__ without an infinite recursion error?
...
..and do I want to always use object? What if I inherit from other classes?
– Greg
Dec 16 '08 at 16:29
1
...
Sequence contains no matching element
...tions are Single() (when you believe there's exactly one matching element) and SingleOrDefault() (when you believe there's exactly one or zero matching elements). I suspect that FirstOrDefault is the best option in this particular case, but it's worth knowing about the others anyway.
On the other h...
How to fetch the row count for all tables in a SQL SERVER database [duplicate]
... table_name varchar(255),
row_count int
)
EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?'
SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC
DROP TABLE #counts
The output will be a list of tables and their row ...