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Good examples of Not a Functor/Functor/Applicative/Monad?
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A good example for a type constructor which is not a functor is Set: You can't implement fmap :: (a -> b) -> f a -> f b, because without an additional constraint Ord b you can't construct f b.
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中文网（自研/维护）拓展 · App Inventor 2 中文网
...一次运行，如果是则返回’真’，否则返回’假’。
ResetFirstRun()
重置App的运行状态为第一次运行。
SystemSettings()
跳转到系统设置界面
WirelessSettings()
跳转到无线和网络设置界面
AirPlaneState
Component fo...
How do I turn on SQL debug logging for ActiveRecord in RSpec tests?
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You could try setting the ActiveRecord logger to stdout in your test somewhere. If you're using rspec, maybe in the spec helper?
ActiveRecord::Base.logger = Logger.new(STDOUT)
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Launching Google Maps Directions via an intent on Android
...hich package you want to use. Before the startActivity() add this: intent.setClassName("com.google.android.apps.maps", "com.google.android.maps.MapsActivity");
– Jeremy Logan
Jun 27 '11 at 17:45
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What's the difference between globals(), locals(), and vars()?
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Save all files in Visual Studio project as UTF-8
...dit: Make sure you select the option that says no byte-order-marker (BOM)
Set code page & hit ok. It seems to persist just past the current file.
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How to return a value from a Form in C#?
...blic Properties on your sub-form like so
public string ReturnValue1 {get;set;}
public string ReturnValue2 {get;set;}
then set this inside your sub-form ok button click handler
private void btnOk_Click(object sender,EventArgs e)
{
this.ReturnValue1 = "Something";
this.ReturnValue2 = Dat...
Read values into a shell variable from a pipe
... ah! so good, this. if testing in an interactive shell, also: "set +m" (not required in an .sh script)
– XXL
May 22 '16 at 15:54
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Sorting dropdown alphabetically in AngularJS
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@DaveEveritt one way to set a default (and to remove the blank item) is to pre-select a bound item for selected. For this example you can do something like $scope.selected = $scope.friends[0]. See this fiddle for a working sample.
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RE error: illegal byte sequence on Mac OS X
...oss","clang:-Os|g' Configure
Note: What matters is an effective LC_CTYPE setting of C, so LC_CTYPE=C sed ... would normally also work, but if LC_ALL happens to be set (to something other than C), it will override individual LC_*-category variables such as LC_CTYPE. Thus, the most robust approach i...