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What is the difference between task and thread?
...More on that in a moment.) If the value you are waiting for comes from the filesystem or a database or the network, then there is no need for a thread to sit around and wait for the data when it can be servicing other requests. Instead, the Task might register a callback to receive the value(s) when...
Rails: How to change the text on the submit button in a Rails Form
i have listed my _form.html.erb file below what i would like to do is change the text on the submit button i know how to do it in html but not shure how to do it in Rails 3
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What's the difference between a word and byte?
... want to verify ‘number of bits’ in your C++ implementation, check the file ‘limits.h’. It should have an entry like below.
#define CHAR_BIT 8 /* number of bits in a char */
WORD
A Word is defined as specific number of bits which can be processed together (i.e. in one attemp...
Get root view from current activity
...
This is what I use to get the root view as found in the XML file assigned with setContentView:
final ViewGroup viewGroup = (ViewGroup) ((ViewGroup) this
.findViewById(android.R.id.content)).getChildAt(0);
...
Version vs build in Xcode
...uild number, increment it, and write it back to the app's {App}-Info.plist file. There are optional, additional steps if you want to write your version/build numbers to your Settings.bundle/Root*.plist file(s).
This is extended from the how-to article here.
In Xcode 4.2 - 5.0:
Load your Xcode pr...
Please explain some of Paul Graham's points on Lisp
...ean for this to be otherwise, though.
So, suppose we've got this code in a file somewhere and we ask Clojure to execute it. Also, let's assume (for the sake of simplicity) that we've made it past the library import. The interesting bit starts at (println and ends at the ) far to the right. This is l...
What is Express.js?
... it is just saying that you are requesting the use of the built-in Express file from your Node modules.
Express is the "backbone" of a lot of Web Apps that have their back end in NodeJS. From what I know, its primary asset being the providence of a routing system that handles the services of "inte...
How to use unicode characters in Windows command line?
...n application (or its C runtime library) should be smart enough to use not File-I/O API, but Console-I/O API. (For an example, see how Python does it.)
Likewise, to read Unicode command-line arguments, an application (or its C runtime library) should be smart enough to use the corresponding API.
Co...
Zoom in on a point (using scale and translate)
...translate on their own, check it out here http://www.dominicpettifer.co.uk/Files/Mosaic/MosaicTest.html Wait for the images to download then use your mouse wheel to zoom, also supports panning by dragging the image around. It's using CSS3 Transforms but you should be able to use the same calculation...
Why are Docker container images so large?
I made a simple image through Dockerfile from Fedora (initially 320 MB).
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