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How to update Ruby to 1.9.x on Mac?
...n turn forces you to install Xcode (if you haven't already) https://itunes.apple.com/us/app/xcode/id497799835 AND/OR install the GCC package from: https://github.com/kennethreitz/osx-gcc-installer to avoid errors running "make".
Edit: As of Mavericks you can choose to install only the Xcode command...
Why are joins bad when considering scalability?
...em through de-normalisation but if used correctly (joining on columns with appropriate indexes an so on) they are not inherently slow.
De-normalisation is one of many optimisation techniques you can consider if your well designed database schema exhibits performance problems.
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“wait_fences: failed to receive reply: 10004003”?
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Override -viewDidAppear:, not -viewWillAppear, and make sure to call [super viewDidAppear:]. You should not perform animations when you are not on screen ("will appear"). And the -viewDidAppear: docs explain that you must call super because t...
What does [object Object] mean?
... [ In HTML5, IDs can start with digits.](whatwg.org/specs/web-apps/current-work/multipage/…)
– Matt Ball
Jan 20 '11 at 17:21
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How to update SQLAlchemy row entry?
...e, you can get SQLAlchemy to be smarter about incrementing, getting it to happen on the database side instead of the Python side. Doing it within the database is better since it's less vulnerable to data corruption (e.g. two clients attempt to increment at the same time with a net result of only on...
Modify UIImage renderingMode from a storyboard/xib file
...the behavior you want.
A few things to note:
The image color will not appear to have changed in interface builder (as of Xcode 6.1.1) but will work when the application is run.
I've experienced some bugginess with this feature and in some situations I've had to remove and re-add the UIImageView...
How can I pop-up a print dialog box using Javascript?
...e user to a printer-friendly page. The client wants a print dialog box to appear automatically when the user arrives at the print-friendly page. How can I do this with javascript?
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Copying PostgreSQL database to another server
...ne is from remote to local. More -> https://www.postgresql.org/docs/9.6/app-pgdump.html
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2D cross-platform game engine for Android and iOS? [closed]
... and a Facebook extension too.
Edit:
Marmalade now has it's own RAD(Rapid Application Development) tool just for 2D development, named as Marmalade Quick. Although the coding will be in Lua not in C++, but since it's built on top of C++ Marmalade, you can easily include a C++ library, and all other...
When would I use Task.Yield()?
...eginning and magically, it will be async? That would pretty much be like wrapping all sync code into Task.Run() and create a fake async method.
– Krumelur
Mar 25 '14 at 20:17
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