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What is the difference between atan and atan2 in C++?
...ple values is (-pi,pi] but atan2 has the range [-pi,pi] so it includes one extra value -pi from another branch due to atan2(-0.0,x) for x<0.
– Z boson
Jul 2 '15 at 11:27
...
Delete a key from a MongoDB document using Mongoose
...
Note that the string is a path to the key. So, if the object you want to delete is nested, you must path to it. This answer solved my problem!
– Bradyo
Apr 21 at 19:56
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how to remove untracked files in Git?
... your local development environment. You can use the same command with the extra -i for interactive mode as such: git clean -fdxi and it will prompt you for which files you want to delete.
– moeabdol
Oct 15 '15 at 11:50
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How to make an element width: 100% minus padding?
... think this is that bad of a solution. In general, wrapping elements in an extra div is a good way to pad elements without pushing the overall width of the element beyond it's parent container.
– Jake Wilson
Aug 23 '11 at 22:13
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String comparison in Python: is vs. == [duplicate]
...
For all built-in Python objects (like
strings, lists, dicts, functions,
etc.), if x is y, then x==y is also
True.
Not always. NaN is a counterexample. But usually, identity (is) implies equality (==). The converse is not true: Two distinct objects can ha...
Rolling median algorithm in C
...he first partition.
public class Solution {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
Runnin
How do you convert a DataTable into a generic list?
...t.Rows
select new Employee
{
_FirstName = row["FirstName"].ToString(),
_LastName = row["Last_Name"].ToString()
}).ToList();
share
|
improve this answer
|
...
MySQL check if a table exists without throwing an exception
...on table_exist($table){
global $con;
$table = $con->real_escape_string($table);
$sql = "show tables like '".$table."'";
$res = $con->query($sql);
return ($res->num_rows > 0);
}
Hope it helps.
Warning: as sugested by @jcaron this function could be vulnerable to sqli...
How to set default value to the input[type=“date”] [duplicate]
...s should be padded with a 0. January is 01.
From the documentation:
A string representing a date.
Value: A valid full-date as defined in [RFC 3339], with the additional qualification that the year component is four or more digits representing a number greater than 0.
Your code should be ...
How to determine MIME type of file in android?
...this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extensi...