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postgresql port confusion 5433 or 5432?
I have installed postgresql on OSX. When I run psql, I get
7 Answers
7
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Javascript Array of Functions
...help others (like me 20 minutes ago :-) looking for any hint about how to call JS functions in an array.
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Decimal number regular expression, where digit after decimal is optional
...r);
\d* - 0 or more digits (the decimal part);
$ - End of the line.
This allows for .5 decimal rather than requiring the leading zero, such as 0.5
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Erratic hole type resolution
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If you want to generate all possible such values, then you can write a function to do so, either with provided or specified bounds.
It may very well be possible to use type-level Church Numerals or some such so as to enforce creation of these, but ...
Scala: what is the best way to append an element to an Array?
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@Daniel Yes, I've just have a small memory hole when I wrote the comment and I didn't find the obvious word "sequence"
– Nicolas
Sep 21 '11 at 14:37
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What is the default value for enum variable?
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It is whatever member of the enumeration represents the value 0. Specifically, from the documentation:
The default value of an enum E is the value produced by the expression (E)0.
As an example, take the following enum:
enum E
{
Foo, Bar, Baz, Quux
}
Without overriding the default val...
How does Angular $q.when work?
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Calling $q.when takes a promise or any other type, if it is not a promise then it will wrap it in a promise and call resolve. If you pass a value to it then it is never going to be rejected.
From the docs:
Wraps an object...
Java ArrayList - how can I tell if two lists are equal, order not mattering?
...u had two lists of Strings it would be something like:
public boolean equalLists(List<String> one, List<String> two){
if (one == null && two == null){
return true;
}
if((one == null && two != null)
|| one != null && two == null
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What does int argc, char *argv[] mean?
... argv. This will (in practice) be 1 plus the number of arguments, as virtually all implementations will prepend the name of the program to the array.
The variables are named argc (argument count) and argv (argument vector) by convention, but they can be given any valid identifier: int main(int num...
How can I get list of values from dict?
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You can use * operator to unpack dict_values:
>>> d = {1: "a", 2: "b"}
>>> [*d.values()]
['a', 'b']
or list object
>>> d = {1: "a", 2: "b"}
>>> list(d.values())
['a', 'b']
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