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Getting visitors country from their IP
... $_SERVER['HTTP_CLIENT_IP'];
}
}
$purpose = str_replace(array("name", "\n", "\t", " ", "-", "_"), NULL, strtolower(trim($purpose)));
$support = array("country", "countrycode", "state", "region", "city", "location", "address");
$continents = array(
"AF" => "Af...
Possible heap pollution via varargs parameter
...not a supertype of the object they point to.
List<A> listOfAs = new ArrayList<>();
List<B> listOfBs = (List<B>)(Object)listOfAs; // points to a list of As
This can lead to "unexplainable" ClassCastExceptions.
// if the heap never gets polluted, this should never throw a C...
当VC问你打算怎么招贤纳士的时候 你该这么答 - 资讯 - 清泛网 - 专注C/C++及内核技术
...的角色十分有把握。”注意，我并不认为这只是对投资人使用的把戏，事实上它是保持高增长必要的手段。
招聘执行风险
Pitch应该包括一系列被VC期待的关键信息，比如产品特色、员工数量、开展城市、营收运转率等等。这样...
Why shouldn't I use mysql_* functions in PHP?
...nnection management ¶
You can also pass in several driver options as an array to the fourth parameter. I recommend passing the parameter which puts PDO into exception mode. Because some PDO drivers don't support native prepared statements, so PDO performs emulation of the prepare. It also lets yo...
Draw a perfect circle from user's touch
...MouseListener;
import java.awt.event.MouseMotionListener;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class CircleGestureDemo extends JFrame implements MouseListener, MouseMotionListener {
enum Type {
RIGHT_DOW...
JavaScript post request like a form submit
...
What about arrays in data params? Jquery post() interprets e.g.: "data: {array: [1, 2, 3]}" as ?array=1&array=2&array=3. Whis code gives another result.
– Scit
Oct 14 '15 at 6:36
...
Why in Java 8 split sometimes removes empty strings at start of result array?
...n an empty leading substring is included at the beginning of the resulting array. A zero-width match at the beginning however never produces such empty leading substring.
The same clause is also added to String.split in Java 8, compared to Java 7.
Reference implementation
Let us compare the code...
Visual Studio Wcf Test Client - entering an Int array
...1 in the Value column, a ▶ will appear allowing you to add values in the array:
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Map over object preserving keys
... function in underscore.js, if called with a javascript object, returns an array of values mapped from the object's values.
...
pandas three-way joining multiple dataframes on columns
...f you have 3 dataframes
# Merge multiple dataframes
df1 = pd.DataFrame(np.array([
['a', 5, 9],
['b', 4, 61],
['c', 24, 9]]),
columns=['name', 'attr11', 'attr12'])
df2 = pd.DataFrame(np.array([
['a', 5, 19],
['b', 14, 16],
['c', 4, 9]]),
columns=['name', 'attr21', 'at...