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How are booleans formatted in Strings in Python?
...False)
True, False
This is not specific to boolean values - %r calls the __repr__ method on the argument. %s (for str) should also work.
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What is the Java equivalent of PHP var_dump?
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It is not quite as baked-in in Java, so you don't get this for free. It is done with convention rather than language constructs. In all data transfer classes (and maybe even in all classes you write...), you should implemen...
Swift: #warning equivalent
Does Swift have a #warning equivalent?
It's simply used to show a warning in Xcode's own GUI
14 Answers
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Running python script inside ipython
Is it possible to run a python script (not module) from inside ipython without indicating its path? I tried to set PYTHONPATH but it seems to work only for modules.
I would like to execute
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Selecting multiple columns in a pandas dataframe
I have data in different columns but I don't know how to extract it to save it in another variable.
18 Answers
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How to get the file extension in PHP? [duplicate]
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edited Aug 8 '13 at 19:11
Amal Murali
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List comprehension: Returning two (or more) items for each item
Is it possible to return 2 (or more) items for each item in a list comprehension?
6 Answers
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How to implement a rule engine?
...ecutable code (using Expression trees) and does not need any complicated switch statements:
(Edit : full working example with generic method)
public Func<User, bool> CompileRule(Rule r)
{
var paramUser = Expression.Parameter(typeof(User));
Expression expr = BuildExpr(r, paramUser);
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Are HLists nothing more than a convoluted way of writing tuples?
...cal use cases where HLists cannot be used (or rather, don't yield any benefits over regular lists).
4 Answers
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Does Dart support enumerations?
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Beginning 1.8, you can use enums like this:
enum Fruit {
apple, banana
}
main() {
var a = Fruit.apple;
switch (a) {
case Fruit.apple:
print('it is an apple');
break;
}
// get all the values of the enums
for (List<Fruit> value in Fruit.values...