大约有 30,000 项符合查询结果（耗时：0.0242秒） [XML]
Why is “while ( !feof (file) )” always wrong?
... stream is still in the good() state.
C++, iostreams getline:
for (std::string line; std::getline(std::cin, line); ) {
consume(line);
}
The result we must use is again std::cin, just as before.
POSIX, write(2) to flush a buffer:
char const * p = buf;
ssize_t n = bufsize;
for (ss...
Can I pass an array as arguments to a method with variable arguments in Java?
...tibility.
So you should just be able to prepend extraVar to args and call String.format(format, args).
share
|
improve this answer
|
follow
|
...
Left-pad printf with spaces
How can I pad a string with spaces on the left when using printf?
4 Answers
4
...
Parsing JSON using Json.net
...ng System.Web.Script.Serialization;
public class NameTypePair
{
public string OBJECT_NAME { get; set; }
public string OBJECT_TYPE { get; set; }
}
public enum PositionType { none, point }
public class Ref
{
public int id { get; set; }
}
public class SubObject
{
public NameTypePair att...
How should one use std::optional?
...plest example I can think of:
std::optional<int> try_parse_int(std::string s)
{
//try to parse an int from the given string,
//and return "nothing" if you fail
}
The same thing might be accomplished with a reference argument instead (as in the following signature), but using std::op...
Regex: match everything but specific pattern
I need a regex able to match everything but a string starting with a specific pattern (specifically index.php and what follows, like index.php?id=2342343 )
...
From Arraylist to Array
...le to convert from ArrayList to Array?
I have a text file with each line a string:
9 Answers
...
Storing SHA1 hash values in MySQL
.... When storing the hash as binary, phpmyadmin will display the it as a hex string, but pma will be unable to use it in the provided "search tab". Will work only if you add the UNHEX() manually to the sql.
– Timo Huovinen
Jan 14 '14 at 12:05
...
How to print a int64_t type in C
... like SCNd64.
A typical definition of PRIu16 would be "hu", so implicit string-constant concatenation happens at compile time.
For your code to be fully portable, you must use PRId32 and so on for printing int32_t, and "%d" or similar for printing int.
...
How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
...