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WPF - How to force a Command to re-evaluate 'CanExecute' via its CommandBindings
...a Menu where each MenuItem in the hierarchy has its Command property set to a RoutedCommand I've defined. The associated CommandBinding provides a callback for the evaluation of CanExecute which controls the enabled state of each MenuItem .
...
How to delete all Annotations on a MKMapView
...mapView.annotations];
And as long as you have mapView.showsUserLocation set to YES, you will still have user location on the map. Settings this property to YES basically asks the map view to start updating and fetching user location, to to show it on the map. From the MKMapView.h comments:
// Se...
Remove duplicated rows
...ortant feature of these methods is a huge performance gain for larger data sets
library(microbenchmark)
library(data.table)
set.seed(123)
DF <- as.data.frame(matrix(sample(1e8, 1e5, replace = TRUE), ncol = 10))
DT <- copy(DF)
setDT(DT)
microbenchmark(unique(DF), unique(DT))
# Unit: microseco...
External template in Underscore
...plate using Underscore in very simple way: _.templateFromUrl(url, [data], [settings]). Method API is almost the same as Underscore's _.template(). Caching included.
_.mixin({templateFromUrl: function (url, data, settings) {
var templateHtml = "";
this.cache = this.cache || {};
if (this...
z-index not working with fixed positioning
...e value are stacked according to appearance in the HTML)
So you can
set a z-index of -1, for #under positioned -ve z-index appear behind non-positioned #over element
set the position of #over to relative so that rule 5 applies to it
The Real Problem
Developers should know the following be...
How do I get LaTeX to hyphenate a word that contains a dash?
...t
hyphenate, which could be troublesome. This is correct English
typesetting style (it may not be correct for other languages), but if
needs must, you can replace the hyphen in the name with a \hyph
command, defined
\def\hyph{-\penalty0\hskip0pt\relax}
This is not the sort of thing t...
Centering floating divs within another div
...e able to accomplish what you want as long as you're floating /unless/ you set a fixed width on the container of the floats.
– Ken Browning
Aug 12 '09 at 23:44
1
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Bootstrap 3 Flush footer to bottom. not fixed
...: 60px;
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
/* Set the fixed height of the footer here */
height: 60px;
background-color: #f5f5f5;
}
for this HTML
<html>
...
<body>
<!-- Begin page content -->
<div class="container">
...
How do I turn a String into a InputStreamReader in java?
... trick:
InputStream is = new ByteArrayInputStream( myString.getBytes( charset ) );
Then convert to reader:
InputStreamReader reader = new InputStreamReader(is);
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How to create a directory and give permission in single command
...
@Whiterose -m option is for Mode. Sets the permission bits for the newly-created directories to the value specified by the Mode variable. The Mode variable takes the same values as the Mode parameter for the chmod command, either in symbolic or numeric form.
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