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A monad is just a monoid in the category of endofunctors, what's the problem?
...gt; Anything including Anything else. As my imagination jumps to Int -> String, it also includes Integer -> Maybe Int, or even Maybe Double -> Either String Int where a :: Maybe Double; b :: Either String Int.
So the statement comes together as follows:
functor scope :: f a -> g b ...
Java Regex Capturing Groups
...ing, that is, the 3000 part.
Note the question mark in the 1st group.
String line = "This order was placed for QT3000! OK?";
Pattern pattern = Pattern.compile("(.*?)(\\d+)(.*)");
Matcher matcher = pattern.matcher(line);
while (matcher.find()) {
System.out.println("group 1: " + matcher.group...
Finding the type of an object in C++
...add that you can find the class type with:
#include <typeinfo>
...
string s = typeid(YourClass).name()
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How do I use FileSystemObject in VBA?
...
In excel 2013 the object creation string is:
Dim fso
Set fso = CreateObject("Scripting.FileSystemObject")
instead of the code in the answer above:
Dim fs,fname
Set fs=Server.CreateObject("Scripting.FileSystemObject")
...
How can I detect when an Android application is running in the emulator?
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Anyone reading this may be interested to know that this string appears to have changed to 'sdk', rather than 'google_sdk'.
– Daniel Sloof
Jun 6 '10 at 19:48
15
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Python list directory, subdirectory, and files
...e hard-coded path ./ in the os.walk(...) call, you can supplement any path string you like.
Note: os.path.expanduser and/or os.path.expandvars can be used for paths strings like ~/
Extending this example:
Its easy to add in file basename tests and directoryname tests.
For Example, testing for *...
How to specify a multi-line shell variable?
...
You should use 'EOF' on the first line if the multiline string isn't meant to be parsed for shell variables and the like.
– Michael Mol
May 3 '17 at 15:33
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What are Scala context and view bounds?
...r.
While a view bound can be used with simple types (for example, A <% String), a context bound requires a parameterized type, such as Ordered[A] above, but unlike String.
A context bound describes an implicit value, instead of view bound's implicit conversion. It is used to declare that for s...
How to use ng-repeat for dictionaries in AngularJs?
... (assuming dictionary is in a variable called d):
my.component.ts:
keys: string[] = []; // declaration of class member 'keys'
// component code ...
this.keys = Object.keys(d);
my.component.html: (will display list of key:value pairs)
<ul *ngFor="let key of keys">
{{key}}: {{d[key]}...
how to remove shared preference while application uninstall in android
...ed="true"
android:icon="@drawable/appicon"
android:label="@string/application_name"
android:largeHeap="true"
android:theme="@style/AppTheme"
tools:replace="android:allowBackup">
<activity
android:name="com.package.SplashActivity"
...