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Showing empty view when ListView is empty
For som>me m> reason the empty view, a TextView in this case, always appears even when the ListView is not empty. I thought the ListView would automatically detect when to show the empty view.
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Remove all classes that begin with a certain string
...ant to remove all of the classes that begin with "bg", how do I do that? Som>me m>thing like this, but that actually works:
15 A...
What's the dSYM and how to use it? (iOS SDK)
Som>me m>tim>me m>s the compiler produces .dSYM files. I guess this is a debugging related file, but I don't know what it is, and how to use it.
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How to tell if UIViewController's view is visible
...visible, so check the main view in the view controller:
Invoking the view m>me m>thod causes the view to load (if it is not loaded) which is unnecessary and may be undesirable. It would be better to check first to see if it is already loaded. I've added the call to isViewLoaded to avoid this problem.
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How useful/important is REST HATEOAS ( maturity level 3)?
I'm getting involved in a project where som>me m> senior team m>me m>mbers believe that a REST API has to be HATEOAS compliant and implem>me m>nt all Richardson's maturity levels ( http://martinfowler.com/articles/richardsonMaturityModel.html )!
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Get average color of image via Javascript
...://jsfiddle.net/xLF38/818/
Note, this will only work with images on the sam>me m> domain and in browsers that support HTML5 canvas:
function getAverageRGB(imgEl) {
var blockSize = 5, // only visit every 5 pixels
defaultRGB = {r:0,g:0,b:0}, // for non-supporting envs
canvas = docum>me m>...
Difference between as.POSIXct/as.POSIXlt and strptim>me m> for converting character vectors to POSIXct/PO
I have followed a number of questions here that asks about how to convert character vectors to datetim>me m> classes. I often see 2 m>me m>thods, the strptim>me m> and the as.POSIXct/as.POSIXlt m>me m>thods. I looked at the 2 functions but am unclear what the difference is.
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How to get tim>me m> difference in minutes in PHP
How to calculate minute difference between two date-tim>me m>s in PHP?
16 Answers
16
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How does Google's Page Speed lossless image compression work?
..._optimizer.cc
webp_optimizer.cc
For PNG files, they use OptiPNG with som>me m> trial-and-error approach
// we use these four combinations because different images seem to benefit from
// different param>me m>ters and this combination of 4 seems to work best for a large
// set of PNGs from the web.
const ...
How to convert latitude or longitude to m>me m>ters?
If I have a latitude or longitude reading in standard Nm>ME m>A format is there an easy way / formula to convert that reading to m>me m>ters, which I can then implem>me m>nt in Java (J9)?
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