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Why does string::compare return an int?
...tring::compare return an int instead of a smaller type like short or char ? My understanding is that this method only returns -1, 0 or 1.
...
What is the difference between String.slice and String.substring?
...te #3:slice()==substring()
Using Negative Numbers as an Argument:
slice() selects characters starting from the end of the string
substr()selects characters starting from the end of the string
substring() Doesn't Perform
Note #3:slice()==substr()
if the First Argument is Greater than the Second:
sl...
Generating a UUID in Postgres for Insert statement?
...d to run psql -d dbname -f SHAREDIR/contrib/module.sql and now it works!!! select uuid_generate_v1(); returns 1 now now. Thanks so much!
– anon58192932
Sep 29 '12 at 22:13
5
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怎么往SetTimer的回调函数传递参数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...LBACK TimerFunc(HWND hwnd,UINT uMsg,UINT_PTR idEvent,DWORD dwTime)
{
char * buf = (char*)idEvent;
printf( "%s/n", buf );//这里打印的就是"abcde"
}
DWORD CALLBACK AutoBakup( PVOID lpParam )
{
char * buf = "abcde";
MSG msg;
UINT id=SetTimer(NULL,1,1000,TimerFunc);
...
How is “=default” different from “{}” for default constructor and destructor?
...le default
constructor);
— if T is a (possibly cv-qualified) non-union class type
without a user-provided constructor, then the object is
zero-initialized and, if T’s implicitly-declared default constructor
is non-trivial, that constructor is called.
— if T is an array type,...
How to check if character is a letter in Javascript?
I am extracting a character in a Javascript string with:
14 Answers
14
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What are the differences between double-dot “..” and triple-dot “…” in Git diff commit ranges?
...eturns the intersection (white part of the diagram) or the rest of the A-B union (green). It would be more to the point without any set operands and with only 1 color.
– xealits
Jan 30 '18 at 11:41
...
C# int to byte[]
...
yup. Basically a c++ union implemented as c# structs. This is super-fast and is good for packing and unpacking all kinds of things that don't fit nicely into the bitconverter/endian problem solutions. IIRC, NAudio uses this approach to very good ...
Using XPATH to search text containing
...with plain XML and XSL files in Microsoft's XML Notepad:
<xsl:value-of select="count(//td[text()='&nbsp;'])" />
The value returned is 1, which is the correct value in my test case.
However, I did have to declare nbsp as an entity within my XML and XSL using the following:
<!DOCTYP...
How many GCC optimization levels are there?
...?
integral_argument also thinly wraps atoi and rejects the argument if any character is not a digit. So negative values fail gracefully.
Back to opts.c:default_options_optimization, we see the line:
if ((unsigned int) opts->x_optimize > 255)
opts->x_optimize = 255;
so that the optimizati...