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Use of alloc init instead of new
...+new. You can, however, usually spot the recent Java comers to Objective-C by their dogged use of +new.
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What exactly is RESTful programming?
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An architectural style called REST (Representational State Transfer) advocates that web applications should use HTTP as it was originally envisioned. Lookups should use GET requests. PUT, POST, and DELETE requests should be used for mutation, creati...
Run R script from command line
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One should use R -r 'options(warn=2); install...' in order to halt the execution and get a non-zero error code in case the installation fails. Otherwise, any install.packages errors are just warnings.
– rvernica
Jan 18 '17 at 16:41
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How do I center align horizontal menu?
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<ul id="topmenu firstlevel">
<li class="firstli" id="node_id_64">
<div><a href="#"><span>Om kampanjen</span></a>
</div>
</li>
<li id="node_id_65">
<div><a href="#"><span>Fakta om inn...
How to define static property in TypeScript interface
...just can't extend an interface with a class (which you would need to do in order to add a static property).
– Jude Fisher
Dec 20 '12 at 17:39
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Android emulator shows nothing except black screen and adb devices shows “device offline”
...tor comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the android home screen or the android logo. Just a black screen. And while initially "adb devices" shows the emulator as offline.after 2-3 minutes the list of attached devices becomes...
Node.js: Difference between req.query[] and req.params
...rentPage) {
/**
* Construct two different queries
* - Fetch all patients
* - Adjusted one to only fetch a selected slice of patients for a given page
*/
patientQuery
/**
* This means I will not retrieve all patients I find, but I will skip the first "n"...
Converting RGB to grayscale/intensity
...ly different numbers / different methods,
you won't see much difference at all on a normal computer screen
under normal lighting conditions -- try it.
Here are some more links on color in general:
Wikipedia Luma
Bruce Lindbloom 's outstanding web site
chapter 4 on Color in the book by Colin Wa...
Use of the MANIFEST.MF file in Java
...1.0 of the Java Development Kit is the following.
Manifest-Version: 1.0
All the entries are as name-value pairs. The name of a header is separated from its value by a colon. The default manifest shows that it conforms to version 1.0 of the manifest specification.
The manifest can also contain inf...
Datatype for storing ip address in SQL Server
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IPv4 is an ordered sequence of four bytes. That IS it's domain, and in storage format that's a BIN(4). The storage format will not interfere with performance because it's the optimal format. The conversion function might (because udf'...