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iPhone App Minus App Store?
...I have personally tested using the AccelerometerGraph sample app on iPhone OS 3.0.
Create Self-Signed Certificate
First you'll need to create a self signed certificate and patch your iPhone SDK to allow the use of this certificate:
Launch Keychain Access.app. With no items selected, from the Key...
Does SQLAlchemy have an equivalent of Django's get_or_create?
...tps://github.com/django/django/blob/master/django/db/models/query.py#L491) confirms this. I'm not sure I understand your reply, you mean the user should put his/her query in a nested transaction? It's not clear to me how a SAVEPOINT` influences reads with REPEATABLE READ. If no effect then the situa...
When to use AtomicReference in Java?
...reference, for which monitor-based synchronization is not appropriate. Suppose you want to check to see if a specific field only if the state of the object remains as you last checked:
AtomicReference<Object> cache = new AtomicReference<Object>();
Object cachedValue = new Object();
cac...
Beyond Stack Sampling: C++ Profilers
...olution for profiling. Very hacky, but it did find the bottleneck." You're confirming my constant rant :) Some people want profiling to be pretty, but if results are what you need, go with what works, not what's pretty.
– Mike Dunlavey
Oct 23 '14 at 18:44
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How to unit test an object with database queries
... a duplicate table to the one that is in the DB already. That way you can confirm DB calls work?
– bretterer
Oct 3 '12 at 3:59
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How to check task status in Celery?
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Adding further to @dstromberg's observation, just for confirmation sake, I picked up a celery task that I knew for sure had succeeded successfully and checked its state property, it still returned PENDING. This doesn't seem to be a reliable way to track state of celery tasks fr...
Returning null as an int permitted with ternary operator but not if statement
...y on. This will generate a NullPointerException at run time, which you can confirm by trying it.
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What is the instanceof operator in JavaScript?
...is is also important if you are using any inheritance patterns and want to confirm the progeny of an object by methods other than duck-typing.
Hope that helps anyone exploring instanceof.
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Why use Ruby instead of Smalltalk? [closed]
... Smalltalk did substantially address the insularity.
The class library of most of the main smalltalk implementations (VisualWorks, VisualAge etc.) was large and had reputation for a fairly steep learning curve. Most key functionality in Smalltalk is hidden away somewhere in the class library, even ...
If unit testing is so great, why aren't more companies doing it? [closed]
... then -- I have no idea what our code coverage was like and I was writing most of the unit tests. Since then I've run into some companies that do lots of testing, but it's chair testing: relies on a person being there, has low repeatibility and low chance of catching bugs. The other attitude is: it ...