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Are typedef and #define the same in c?
...int *a, b, c
typedef int a10[10];
a10 a, b, c; // create three 10-int arrays
typedef int (*func_p) (int);
func_p fp; // func_p is a pointer to a function that
// takes an int and returns an int
share
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...
The count method of NSArray returns an NSUInteger, and on the 64-bit OS X platform
NSUInteger is defined as unsigned long, and
unsigned long is a 64-bit unsigned integer.
int is a 32-bit integer.
So int is a "smaller" datatype than NSUInteger,...
Change default primary key in Eloquent
...composite keys, but here's a good workaround so you can have $primaryKey = array('key1', 'key1'); github.com/laravel/framework/issues/5517#issuecomment-52996610
– mopo922
Jan 27 '15 at 6:36
...
Convert RGBA PNG to RGB with PIL
...y as np
FNAME = 'logo.png'
img = Image.open(FNAME).convert('RGBA')
x = np.array(img)
r, g, b, a = np.rollaxis(x, axis = -1)
r[a == 0] = 255
g[a == 0] = 255
b[a == 0] = 255
x = np.dstack([r, g, b, a])
img = Image.fromarray(x, 'RGBA')
img.save('/tmp/out.jpg')
Note that the logo also has some se...
How to sort by two fields in Java?
I have array of objects person (int age; String name;) .
16 Answers
16
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Preventing Laravel adding multiple records to a pivot table
...
You can also use the $model->sync(array $ids, $detaching = true) method and disable detaching (the second param).
$cart->items()->sync([$item->id], false);
Update:
Since Laravel 5.3 or 5.2.44, you can also call syncWithoutDetaching:
$cart->ite...
What are the differences between vector and list data types in R?
...er they are recursive, atomic or have dimensional attributes (matrices and arrays). However, I'm not sure that a discussion of the "advantages and disadvantages" of different data structures is a sufficiently focused question for SO. To add to what Tommy said, besides lists being capable of holding ...
MySQL, Check if a column exists in a table with SQL
...mysql_query("SELECT * FROM `my_table_name` LIMIT 1");
$mycol = mysql_fetch_array($chkcol);
if(!isset($mycol['my_new_column']))
mysql_query("ALTER TABLE `my_table_name` ADD `my_new_column` BOOL NOT NULL DEFAULT '0'");
shar...
What is 'YTowOnt9'?
...
It seems to be a PHP-serialized empty array, base 64 encoded.
$ base64 -D <<< 'YTowOnt9'
a:0:{}
$ php -r 'var_dump(unserialize(base64_decode("YTowOnt9")));'
array(0) {
}
There are many scripts that serialize arrays of data. When the arrays have data, ...
How do you clear a slice in Go?
...resting. Is there any other way to remove all elements from the underlying array of the slice while leaving the underlying capacity unchanged?
– Chris Weber
Jun 6 '13 at 21:07
3
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