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“Warning: iPhone apps should include an armv6 architecture” even with build config set
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If you uncheck "Build Active Architecture Only", then it will build all the valid architectures.
Update: This is no longer applicable as of Xcode 4 - follow Nick's instructions for Xcode 4 and later.
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Run a single migration file
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You can just run the code directly out of the ruby file:
rails console
>> require "db/migrate/20090408054532_add_foos.rb"
>> AddFoos.up
Note: newer versions of rails may require AddFoos.new.up rather than AddFoos.up.
An alternative way (without IRB) which r...
Getting value of public static final field/property of a class in Java via reflection
...t(null);
Exception handling is left as an exercise for the reader.
Basically you get the field like any other via reflection, but when you call the get method you pass in a null since there is no instance to act on.
This works for all static fields, regardless of their being final. If the field ...
Format a datetime into a string with milliseconds
...ct if the usec part is > 999500, then you will never get the time right by fiddling with microseconds part
– Chris
Nov 21 '17 at 1:11
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Collapsing Sidebar with Bootstrap
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc)
... (usually) much faster than the already mentioned JSON libraries, often an order of magnitude faster. And because of it's "recently instantiated object cache", it will (again, usually) use less memory as well.
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Choosing between qplot() and ggplot() in ggplot2 [closed]
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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HashSet versus Dictionary w.r.t searching time to find if an item exists
...s for Dictionary is so fast that there is no benefit from using HashSet at all, in the OP's case.
– EtherDragon
Jul 27 '12 at 23:03
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Async image loading from url inside a UITableView cell - image changes to wrong image while scrollin
...se you'll see the flickering of images.
A more subtle issue is that on a really slow network, your asynchronous request might not finish before the cell scrolls off the screen. You can use the UITableView method cellForRowAtIndexPath: (not to be confused with the similarly named UITableViewDataSourc...
Does Foreign Key improve query performance?
... getting a 404 error. It's about having usable data. It's about not losing orders and financial data for reports for instance because of the incompetence of the developers. There is NO EXCUSE for not using foreign keys.
– HLGEM
Oct 19 '11 at 14:20
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