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app inventor 里的换行符是什么？ - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
Linux(unix) 和 mac 默认使用 "\n" 作为换行符；Windows 默认使用 "\r\n" 作为换行符；"\n" 在 ACSII表中 对应 LF , ACSII值为 10 ，即0x0a (16进制) "\r" 在ACSII表中对应 "CR"， ACSII值为 13 ，即0x0d (16进制) &n...
Reverting part of a commit with git
...ular commit in git. Unfortunately, our organization still uses CVS as a standard, so when I commit back to CVS multiple git commits are rolled into one. In this case I would love to single out the original git commit, but that is impossible.
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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
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Just to clear up... or sum up...
nchar and nvarchar can store Unicode characters.
char and varchar cannot store Unicode characters.
char and nchar are fixed-length which will reserve storage space for number of characters you specify even if you don't use up all t...
How do I pass a unique_ptr argument to a constructor or a function?
I'm new to move semantics in C++11 and I don't know very well how to handle unique_ptr parameters in constructors or functions. Consider this class referencing itself:
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How to read a large file - line by line?
... for line in f:
# Do something with 'line'
The with statement handles opening and closing the file, including if an exception is raised in the inner block. The for line in f treats the file object f as an iterable, which automatically uses buffered I/O and memory management so you don't ...
How to select multiple rows filled with constants?
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I used this with SQL Server and it worked, but I had to use AS to give aliases on the first SELECT
– Sled
May 18 '17 at 18:34
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Practical uses for AtomicInteger
I sort of understand that AtomicInteger and other Atomic variables allow concurrent accesses. In what cases is this class typically used though?
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Using arrays or std::vectors in C++, what's the performance gap?
...hould be avoided. There is the problem you have to keep track of the size, and you need to delete them manually and do all sort of housekeeping.
Using arrays on the stack is also discouraged because you don't have range checking, and passing the array around will lose any information about its siz...
Calculate the median of a billion numbers
If you have one billion numbers and one hundred computers, what is the best way to locate the median of these numbers?
25 A...
The tilde operator in C
I've seen the tilde operator used in the ELF hashing algorithm, and I'm curious what it does. (The code is from Eternally Confused .)
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