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Difference between freeze and seal
...d about the JavaScript methods freeze and seal , which can be used to make any Object immutable.
8 Answers
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Use 'import module' or 'from module import'?
...between import module and from module import foo is mainly subjective. Pick the one you like best and be consistent in your use of it. Here are some points to help you decide.
import module
Pros:
Less maintenance of your import statements. Don't need to add any additional imports to start usi...
Converting from a string to boolean in Python?
Does anyone know how to do convert from a string to a boolean in Python? I found this link . But it doesn't look like a proper way to do it. I.e. using built-in functionality, etc.
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Operator overloading in Java
... define your own operators which act in the same way though.
For a Java-like (and JVM-based) language which does support operator overloading, you could look at Kotlin or Groovy. Alternatively, you might find luck with a Java compiler plugin solution.
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How do I clone a Django model instance object and save it to the database?
...
Just change the primary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying...
How do I detect “shift+enter” and generate a new line in Textarea?
...olution:
Tim's solution below is better I suggest using that:
https://stackoverflow.com/a/6015906/4031815
My solution
I think you can do something like this..
EDIT : Changed the code to work irrespective of the caret postion
First part of the code is to get the caret position.
Ref: How to...
The most accurate way to check JS object's type?
... answered Oct 25 '11 at 18:50
kmathenykmatheny
3,67211 gold badge1616 silver badges1212 bronze badges
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How to check whether a given string is valid JSON in Java
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Vadzim
19.8k99 gold badges114114 silver badges137137 bronze badges
answered Apr 16 '12 at 13:19
MByDMByD
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When should the volatile keyword be used in C#?
Can anyone provide a good explanation of the volatile keyword in C#? Which problems does it solve and which it doesn't? In which cases will it save me the use of locking?
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Why doesn't Java allow generic subclasses of Throwable?
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As mark said, the types are not reifiable, which is a problem in the following case:
try {
doSomeStuff();
} catch (SomeException<Integer> e) {
// ignore that
} catch (SomeException<String> e) {
crashAndBurn()
...