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What is the best way to concatenate two vectors?
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Depends on whether you really need to physically concatenate the two vectors or you want to give the appearance of concatenation of the sake of iteration. The boost::join function
http://www.boost.org/doc/libs/1_43_0/libs/range/doc/html/range/reference/utilities/join.html
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When would I need a SecureString in .NET?
...dance from MS is: SecureString shouldn't be used
– Richard Morgan
Jul 5 '19 at 11:24
add a comment
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Getting a File's MD5 Checksum in Java
... byte data[] = org.apache.commons.codec.digest.DigestUtils.md5(fis); char md5Chars[] = Hex.encodeHex(data); String md5 = String.valueOf(md5Chars);`
– Dmitry_L
Jul 17 '13 at 10:45
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C++ equivalent of StringBuffer/StringBuilder?
...As far as I know std::string cannot simply extend the size of its internal char*. That means mutating it in a way which requires more characters requires a reallocation and copying. It's no different than a vector of chars and it is certainly better to reserve the space you need in that case.
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Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...应表达式 a ^ b
__unm(a) 对应表达式 -a
__concat(a, b) 对应表达式 a .. b
__len(a) 对应表达式 #a
__eq(a, b) 对应表达式 a == b
__lt(a, b) 对应表达式 a < b
__le(a, b...
How to read from a file or STDIN in Bash?
...ter to add -r to your read command, so that it doesn't accidentally eat \ chars; use while IFS= read -r line to preserve leading and trailing whitespace.
– mklement0
Feb 28 '15 at 23:34
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Stop Excel from automatically converting certain text values to dates
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In my MySQL query (for CSV output through PHP), I used CONCAT('\t', column_name). Also did the trick. Thanks!
– Just Plain High
Jun 24 '16 at 14:39
1
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generating GUID without hyphen
... is it possible to create a GUID with both Upper and lowercase chars along with numbers???
– Harish Kumar
Jan 16 '12 at 8:55
7
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How do you iterate through every file/directory recursively in standard C++?
...Find = INVALID_HANDLE_VALUE;
}
return true;
}
int main(int argc, char* argv[])
{
vector<wstring> files;
if (ListFiles(L"F:\\cvsrepos", L"*", files)) {
for (vector<wstring>::iterator it = files.begin();
it != files.end();
++it) {
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How to report an error from a SQL Server user-defined function
...T to throw meaningful error:
create function dbo.throwError()
returns nvarchar(max)
as
begin
return cast('Error happened here.' as int);
end
Then Sql Server will show some help information:
Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value 'Error happened...