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Difference between malloc and calloc?
..., for example since the parts of hash which are empty aren't backed by any extra memory (pages); they happily point to the single zero-initialized page, which can be even shared between processes.
Any write to virtual address is mapped to a page, if that page is the zero-page, another physical page...
When to use Cast() and Oftype() in Linq
...T
for example:
object[] objs = new object[] { "12345", 12 };
objs.Cast<string>().ToArray(); //throws InvalidCastException
objs.OfType<string>().ToArray(); //return { "12345" }
share
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PHP DateTime::modify adding and subtracting months
...bled up on) and demand-end (users feel cheated out of Feb and perceive the extra March as attempt to correct mistake). On the other hand, notice that the two date sets:
never overlap
are always on the same date when that month has the date (so the Jan. 30 set looks pretty clean)
are all within 3 da...
How to 'insert if not exists' in MySQL?
...ique($table, $vars)
{
if (count($vars)) {
$table = mysql_real_escape_string($table);
$vars = array_map('mysql_real_escape_string', $vars);
$req = "INSERT INTO `$table` (`". join('`, `', array_keys($vars)) ."`) ";
$req .= "SELECT '". join("', '", $vars) ."' FROM DUAL ";
$req .=...
Regex to test if string begins with http:// or https://
I'm trying to set a regexp which will check the start of a string, and if it contains either http:// or https:// it should match it.
...
Using Rails serialize to save hash to database
...
The column type is wrong. You should use Text instead of String. Therefore, your migration should be:
def self.up
add_column :users, :multi_wrong, :text
end
Then Rails will properly convert it into YAML for you (and perform proper serialization). Strings fields are limited ...
Jquery mouseenter() vs mouseover()
...
@FredrickGauss - I'm using the + operator to coerce the string returned from el.text() to a number. Did I need to? No. In this case, the next statement that uses n would also coerce it to a number. So, why did I use it? I'm not sure... this was 2 years ago. It's a good habit. It ...
How can I dynamically create a selector at runtime with Objective-C?
...dName:) but what I want to do is create a selector dynamically from an NSString . Is this even possible?
4 Answers
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How do you convert a jQuery object into a string?
How do you convert a jQuery object into a string?
12 Answers
12
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TypeScript type signatures for functions with variable argument counts
...o the ... directly in the method:
class Header { constructor(public name: string, public value: string) {} }
getHeaders(...additionalHeaders: Header[]): HttpHeaders {
let headers = new HttpHeaders();
headers.append('Content-Type', 'application/json')
if (additionalHeaders && a...