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How to detect first time app launch on an iPhone
...ingWithOptions:(NSDictionary *)launchOptions
{
if (![[NSUserDefaults standardUserDefaults] boolForKey:@"HasLaunchedOnce"])
{
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"HasLaunchedOnce"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
return YE...
Why are mutable structs “evil”?
...
So if you change a copy you are changing only that copy, not the original and not any other copies which might be around.
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
If you want to change it you have to consciously do it by creating...
How to see indexes for a database or table in MySQL?
... answered Mar 6 '11 at 21:05
RolandoMySQLDBARolandoMySQLDBA
40.5k1515 gold badges8181 silver badges124124 bronze badges
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How do I “commit” changes in a git submodule? [duplicate]
I have, in my naivety, set up a git submodule and treated it like a Subversion external - i.e. it's now full of changes that I've just realized haven't been committed or pushed anywhere.
...
Auto-reload browser when I save changes to html file, in Chrome?
I'm editing an HTML file in Vim and I want the browser to refresh whenever the file underneath changes.
22 Answers
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What's the key difference between HTML 4 and HTML 5?
What are the key differences between HTML4 and HTML5 draft ?
8 Answers
8
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Code formatting shortcuts in Android Studio for Operation Systems
I have started developing with Android Studio . In Eclipse I was using Ctrl + Shift + F , but in Android Studio it does not work. It will be different.
...
How to return multiple values? [duplicate]
...wo or more values from a method to main in Java? If so, how it is possible and if not how can we do?
4 Answers
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Set “Homepage” in Asp.Net MVC
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Look at the Default.aspx/Default.aspx.cs and the Global.asax.cs
You can set up a default route:
routes.MapRoute(
"Default", // Route name
"", // URL with parameters
new { controller = "Home", action = "Index"} //...
How do I PHP-unserialize a jQuery-serialized form?
...g on the request type.
The serialize method just takes the form elements and puts them in string form. "varname=val&var2=val2"
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