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How to quickly check if folder is empty (.NET)?
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Callum Watkins
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answered Jun 5 '09 at 8:33
Thomas LevesqueThomas Levesque
...
SQLite UPSERT / UPDATE OR INSERT
...ostgreSQL syntax.
INSERT INTO players (user_name, age)
VALUES('steven', 32)
ON CONFLICT(user_name)
DO UPDATE SET age=excluded.age;
Note: For those having to use a version of SQLite earlier than 3.24.0, please reference this answer below (posted by me, @MarqueIV).
However if you do...
Why is (object)0 == (object)0 different from ((object)0).Equals((object)0)?
...thod Object.Equals. This is a virtual method which will filter down to Int32.Equals and this checks for a boxed integer. Both integer values are 0 hence they are equal
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improve this answer...
error: passing xxx as 'this' argument of xxx discards qualifiers
...give a more detail example. As to the below struct:
struct Count{
uint32_t c;
Count(uint32_t i=0):c(i){}
uint32_t getCount(){
return c;
}
uint32_t add(const Count& count){
uint32_t total = c + count.getCount();
return total;
}
};
As you see...
What is the maximum value for an int32?
...is very near to 1000, so 2^(3*10) is 1000^3 or about 1 billion. One of the 32 bits is used for sign, so the max value is really only 2^31, which is about twice the amount you get for 2^(3*10): 2 billion.
– 16807
Dec 3 '13 at 22:24
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Can you grab or delete between parentheses in vi/vim?
...would do the following:
printf("%3.0f\t%6.1f\n", fahr, ((5.0/9.0) * (fahr-32)));
^
Let's say your cursor is positioned at ^. Enter the following sequence to select the part you are looking for:
v2a)
First v enters Visual mode, then you specify that you want t...
How can I decompress a gzip stream with zlib?
...indowBits can also be greater than 15 for optional gzip decoding. Add
32 to windowBits to enable zlib and gzip decoding with automatic header
detection, or add 16 to decode only the gzip format (the zlib format will
return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->...
std::wstring VS std::string
... forbidden in UTF-8.
On Windows?
On Windows, this is a bit different. Win32 had to support a lot of application working with char and on different charsets/codepages produced in all the world, before the advent of Unicode.
So their solution was an interesting one: If an application works with cha...
Convert integer to binary in C#
...
32
@kashif int value = Convert.ToInt32("1101", 2) would give value the value 13.
– flindeberg
Mar 5 '13...
Why use deflate instead of gzip for text files served by Apache?
...====================+---+---+---+---+
|...compressed data...| ADLER32 |
+=====================+---+---+---+---+
So, a few headers and an ADLER32 checksum
RFC 2616 defines gzip as:
gzip An encoding format produced by the file compression program
"gzip" (GNU zip) as de...