iOS5 Images disappear when scrolling with webkit-overflow-scrolling: touch
I had previously been using iScroll plugin but wanted to drop it for the native behaviour. The initial implementation was using webkit-overflow-scrolling: auto; however I updated this to ... webkit-overflow-scrolling: touch .. to enable the motion/inertia on the touch scroll. The issue with this is the list items contained within the navigation disappear completely when scrolling, and only return
How to use xmlns declarations with XPath in Nokogiri
I'm using Nokogiri::XML to parse responses from Amazon SimpleDB. The response is something like: <SelectResponse xmlns="http://sdb.amazonaws.com/doc/2007-11-07/"> <SelectResult> <Item> <Attribute><Name>Foo</Name><Value>42</Value></Attribute> <Attribute><Name>Bar</Name><Value>XYZ</Value></Attribute> </Item> </SelectResult> </SelectResponse> If I just hand the response straight over to Nokogiri, all
Mysql 5.6 headaches on Mac OSX
Several of my colleagues and I have recently upgraded from MySQL 5.5 to MySQL 5.6 using homebrew on our Macs to test locally before upgrading our servers. Since this upgrade, we all have been experiencing intermittent MySQL errors when running our rails code: Lost connection to MySQL server at 'sending authentication information', system error: 32 We have tried re-making our usernames and password
Can you add buttons to navigation bars through storyboard?
At the moment, I've been adding navigation buttons like follows: self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Add" style:self.editButtonItem.style target:self action:@selector(doneButtonPressed)]; It seems a bit silly to not add them through storyboard, but I can't find a way to do so. Is there one that I'm missing?
Bad gateway errors at load on nginx + Unicorn (Rails 3 app)
I have an Rails (3.2) app that runs on nginx and unicorn on a cloud platform. The "box" is running on Ubuntu 12.04. When the system load is at about 70% or above, nginx abruptly (and seemingly randomly) starts throwing 502 Bad gateway errors; when load is less there's nothing like it. I have experimented with various number of cores (4, 6, 10 - I can "change hardware" as it's on cloud platform), a
Why does HTML think “chucknorris” is a color?
Why do certain random strings produce colors when entered as background colors in HTML? For example, bgcolor="chucknorris" produces a red background: <body bgcolor="chucknorris"> test </body> Conversely, bgcolor="chucknorr" produces a yellow background: <body bgcolor="chucknorr"> test </body> This holds true across various browsers and platforms. What’s going on here?
Can we set easy-to-remember hostnames for EC2 instances?
Before you get started, try running hostname and hostname --fqdn and take note of what the responses are. You can edit /etc/hostname and set a hostname, which will stick around after rebooting. You can force the hostname to be "reloaded" by using hostname -F /etc/hostname to read that value into the hostname. The bash prompt will change after you logout and login. warning / note: Yes, it is nice t
UIButton custom font vertical alignment
I've got a UIButton which uses a custom font, which is set when my view loads: - (void)viewDidLoad { [super viewDidLoad]; self.searchButton.titleLabel.font = [UIFont fontWithName: @"FONTNAME" size: 15.0 ]; } The problem I've got is that the font is appearing to float up of the center line. If I comment out this line, the default font appears vertically centered fine. But changing to the custom fon
When to use UIKIT_EXTERN vs just extern
I'm guessing I would only use UIKIT_EXTERN if there is a chance of C++ code in my project that may use the variable. Right. This is the primary reason. This happens because C and C++ symbols use different naming conventions. There is a less common reason: UIKIT_EXTERN also specifies default visibility. Note: More generally, "symbol" -- not "variable" since extern could also be applied to constants
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