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How do you determine the size of a file in C?
...ject's code:
#include <sys/stat.h>
#include <sys/types.h>
off_t fsize(const char *filename) {
struct stat st;
if (stat(filename, &st) == 0)
return st.st_size;
return -1;
}
Changes:
Made the filename argument a const char.
Corrected the struct stat defini...
Can I create a One-Time-Use Function in a Script or Stored Procedure?
...nderstand the security implications before you consider this.
DECLARE @add_a_b_func nvarchar(4000) = N'SELECT @c = @a + @b;';
DECLARE @add_a_b_parm nvarchar(500) = N'@a int, @b int, @c int OUTPUT';
DECLARE @result int;
EXEC sp_executesql @add_a_b_func, @add_a_b_parm, 2, 3, @c = @result OUTPUT;
PRI...
How to iterate a loop with index and element in Swift
...100, height: 100)
button.addTarget(self, action: #selector(iterate(_:)), for: .touchUpInside)
view.addSubview(button)
}
@objc func iterate(_ sender: UIButton) {
let tuple = generator.next()
print(String(describing: tuple))
}
}
PlaygroundPage.current.liv...
How do I use Ruby for shell scripting?
...rectory, including current dir.
#=> array of relative names
File.expand_path('~/file.txt') #=> "/User/mat/file.txt"
File.dirname('dir/file.txt') #=> 'dir'
File.basename('dir/file.txt') #=> 'file.txt'
File.join('a', 'bunch', 'of', 'strings') #=> 'a/bunch/of/strings'
__FILE__ #=> t...
How can I get the source code of a Python function?
...ole class: you can restore it method by method: dir(MyClass), then MyClass.__init__?? and so on.
– Valerij
May 8 '19 at 12:32
...
Calculate distance between two points in google maps V3
...t data is google.maps.LatLng objects. If you just have raw data like {lat: __, lon: __} then you would instead use p1.lat, for example.
– Don McCurdy
Mar 24 '17 at 20:12
...
Get Android Phone Model programmatically
...:
Build.BOARD = MSM8974
Build.BOOTLOADER = s1
Build.BRAND = Sony
Build.CPU_ABI = armeabi-v7a
Build.CPU_ABI2 = armeabi
Build.DEVICE = D5503
Build.DISPLAY = 14.6.A.1.236
Build.FINGERPRINT = Sony/D5503/D5503:5.1.1/14.6.A.1.236/2031203XXX:user/release-keys
Build.HARDWARE = qcom
Build.HOST = BuildHost
B...
Useful GCC flags for C
...to catch all kinds of dangling pointers.
http://gcc.gnu.org/wiki/Mudflap_Pointer_Debugging
Here's a demo:
$ cat mf.c
int main()
{
int a[10];
a[10]=1; // <-- o noes, line 4
}
$ gcc -fmudflap mf.c -lmudflap
$ ./a.out
*******
mudflap violation 1 (check/write): time=1280862302.170759 ptr=...
How do I declare class-level properties in Objective-C?
...natomic' version? Also i would consider naming the backing variables with '_' as is default by apple and also improves readability since returning/setting self.value from the getter/setter causes infinite recursion. In my opinion this is the right answer.
– Peter Segerblom
...
Convert string to integer type in Go?
...64); err == nil {
fmt.Printf("i=%d, type: %T\n", i, i)
}
var i int
if _, err := fmt.Sscan(s, &i); err == nil {
fmt.Printf("i=%d, type: %T\n", i, i)
}
Output (if called with argument "123"):
i=123, type: int
i=123, type: int64
i=123, type: int
Parsing Custom strings
There is also a...