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Does ruby have real multithreading?
...0.0 S 31T 0:00.01 0:00.01 /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/bin/java -Djdk.home= -Djruby.home=/Users/jalcazar/.rvm/rubies/jruby-1.7.10 -Djruby.script=jruby -Djruby.shell=/bin/sh -Djffi.boot.library.path=/Users/jalcazar/.rvm/rubies/jruby-1.7.10/lib/jni:/Users/jalc...
How can I make a UITextField move up when the keyboard is present - on starting to edit?
...henever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
-(void)keyboardWillShow {
// Animate the current view out of the way
if (self.view.frame.origin.y >= 0)
{
[self setViewMovedUp:YES];
}
else if (self.view.frame.origin.y < ...
How do I get Gridview to render THEAD?
...
I use this in OnRowDataBound event:
protected void GridViewResults_OnRowDataBound(object sender, GridViewRowEventArgs e) {
if (e.Row.RowType == DataControlRowType.Header) {
e.Row.TableSection = TableRowSection.TableHeader;
}
}
...
What is the colon operator in Ruby?
...te some of the things mentioned in the answers:
require 'benchmark'
n = 1_000_000
print '"foo".equal? "foo" -> ', ("foo".equal? "foo"), "\n"
print '"foo" == "foo" -> ', ("foo" == "foo" ), "\n"
print ':foo.equal? :foo -> ', (:foo.equal? :foo ), "\n"
print ':foo == :foo -&g...
What's the simplest way to test whether a number is a power of 2 in C++?
...a clever little bit hack to test that one and only one bit is set.
bool is_power_of_2(int x) {
return x > 0 && !(x & (x−1));
}
For more bit twiddling see here.
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improv...
How to check if a table exists in a given schema
...sts" (no matter who's asking), querying the information schema (information_schema.tables) is incorrect, strictly speaking, because (per documentation):
Only those tables and views are shown that the current user has access
to (by way of being the owner or having some privilege).
The query p...
What is the difference between mocking and spying when using Mockito?
... we create a mock of the ArrayList class:
@Test
public void whenCreateMock_thenCreated() {
List mockedList = Mockito.mock(ArrayList.class);
mockedList.add("one");
Mockito.verify(mockedList).add("one");
assertEquals(0, mockedList.size());
}
As you can see – adding an element in...
Get local IP address in node.js
...
var _ = require('underscore'); var ip = _.chain(require('os').networkInterfaces()).flatten().filter(function(val){ return (val.family == 'IPv4' && val.internal == false) }).pluck('address').first().value(); console.log(ip...
How to remove convexity defects in a Sudoku square?
...he result. These points are the grid line intersections:
centerOfGravity[l_] :=
ComponentMeasurements[Image[l], "Centroid"][[1, 2]]
gridCenters =
Table[centerOfGravity[
ImageData[Dilation[Image[h], DiskMatrix[2]]]*
ImageData[Dilation[Image[v], DiskMatrix[2]]]], {h,
horizontalGrid...
Understanding implicit in Scala
... the implicit class in the scope you are wanting to use
import Extensions._
2.meterToCm // result 200
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