大约有 31,840 项符合查询结果(耗时:0.0300秒) [XML]
Array Size (Length) in C#
...
If it's a one-dimensional array a,
a.Length
will give the number of elements of a.
If b is a rectangular multi-dimensional array (for example, int[,] b = new int[3, 5];)
b.Rank
will give the number of dimensions (2) and
b.GetLe...
MySQL > Table doesn't exist. But it does (or it should)
...tadir of a MySQL installation and all the bases moved correctly except for one.
I can connect and USE the database. SHOW TABLES also returns me all the tables correctly, and the files of each table exists on the MySQL data directory.
...
Why do we have to specify FromBody and FromUri?
...ior, then why we need to ovveride and what benefits we will get if we mentioned this attribute ?
– Rajneesh
Jul 9 '14 at 6:32
1
...
How do I join two lists in Java?
...iy the original lists; JDK only, no external libraries. Bonus points for a one-liner or a JDK 1.3 version.
32 Answers
...
When should a class be Comparable and/or Comparator?
...both Comparable and Comparator . What does this mean? Why would I use one over the other?
11 Answers
...
Storing time-series data, relational or non?
...g 1,000 rows from a 16 billion row table is instantaneous).
Your table has one serious impediment. Given your description, the actual PK is (Device, Metric, DateTime). (Please don't call it TimeStamp, that means something else, but that is a minor issue.) The uniqueness of the row is identified b...
Check status of one port on remote host [closed]
...t) but much like nc, I can't | grep Empty for these output statements like one might expect (something about newlines or lack of immediate output?). I presume your line is a conditional based off of the exit code, right? I'm on El Cap; maybe in other versions or OSes the failure state exits -1 rathe...
First-time database design: am I overengineering? [closed]
...e more answers to your questions:
1) You're pretty much on target for someone who is approaching a problem like this for the first time. I think the pointers from others on this question thus far pretty much cover it. Good job!
2 & 3) The performance hit you will take will largely be dependen...
The Difference Between Deprecated, Depreciated and Obsolete [closed]
...ple.
Obsolete means that is already out-of-use.
Depreciated means the monetary value of something has decreased over time. E.g., cars typically depreciate in value.
Also for more precise definitions of the terms in the context of the English language I recommend using https://english.stackexcha...
What is the use of making constructor private in a class?
...d me would rather prevent an instantiation of utility class than leave out one line private constructor.
– nanda
Jan 14 '10 at 9:40
1
...
