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In C/C++ what's the simplest way to reverse the order of bits in a byte?
...a script which outputs the table of the first 256 bytes and their reverse mapping. Yes, you're back to writing the reverse function, but now in your favourite scripting language, and it can be as nasty as you want -- you're going to throw it away as soon as it's done and you ran it once. Have the sc...
parseInt vs unary plus, when to use which?
... suprised that parseInt beats unary plus on iOS :) This is helpful for web apps with heavy CPU consumption only. As a rule-of-thumb I'd suggest JS opt-guys to consider any JS operator over another one from the mobile performance point of view nowadays.
So, go mobile-first ;)
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Visual Studio opens the default browser instead of Internet Explorer
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Note this is apparently built into VS 11 - blogs.msdn.com/b/webdevtools/archive/2012/03/01/…
– SamStephens
Mar 6 '12 at 2:12
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How to pass object with NSNotificationCenter
I am trying to pass an object from my app delegate to a notification receiver in another class.
5 Answers
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Rails: How can I set default values in ActiveRecord?
...please use Base.after_initialize :method instead. (called from /Users/me/myapp/app/models/my_model:15)
Therefore I'd say write an after_initialize callback, which lets you default attributes in addition to letting you set defaults on associations like so:
class Person < ActiveRecord::Base
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NGINX to reverse proxy websockets AND enable SSL (wss://)?
...n HTTP handshake (a higher software level than TCP) you have to tweak your app to handle both TCP and HTTP traffic. I can't recommend a way to do this just yet.
– crockpotveggies
Nov 15 '12 at 21:20
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What is global::?
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What would happen if I has an auto-generated class with a class prefixed with the global namespace and the class was called Foo I had a class I had created which also was called Foo also with no namespace?
– Sachin ...
Purpose of buildscript block in Gradle
...ation in order to compile and evaluate the rest of the build script. What happens under the hood is that Gradle separates the build script into two scripts (the buildScript block and everything else) so that it can process them separately.
– Peter Niederwieser
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Parsing IPv6 extension headers containing unknown extensions
...t least without in-band signaling and other hacks. That's excusable in an application protocol where you control both ends and only have to account for new versions of your app, but not in something designed to last for... hundreds of years?
– AdamIerymenko
Ju...
Is asynchronous jdbc call possible?
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I don't understand how any of the proposed approaches that wrap JDBC calls in Actors, executors or anything else can help here - can someone clarify.
Surely the basic problem is that the JDBC operations block on socket IO. When it does this it blocks the Thread its r...