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Is object empty? [duplicate]
...uming that by empty you mean "has no properties of its own".
// Speed up calls to hasOwnProperty
var hasOwnProperty = Object.prototype.hasOwnProperty;
function isEmpty(obj) {
// null and undefined are "empty"
if (obj == null) return true;
// Assume if it has a length property with a ...
What is a StackOverflowError?
...
Parameters and local variables are allocated on the stack (with reference types, the object lives on the heap and a variable in the stack references that object on the heap). The stack typically lives at the upper end of your address space and as it is used up...
How to change spinner text size and text color?
... can't this be done by using style only? I am surprised how small stuff is so difficult to style in android.. this is frustrating.. I wished they had a styling system like css
– yeahman
Mar 14 '16 at 18:54
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MySQL: Sort GROUP_CONCAT values
In short: Is there any way to sort the values in a GROUP_CONCAT statement?
2 Answers
2...
Missing return statement in a non-void method compiles
... the compiler even warn about returning something? Or why would a language allow us to have a non-void method having an infinite loop and not returning anything?
...
What's valid and what's not in a URI query?
...t are delimited by characters in the "reserved" set. These characters are called "reserved" because they may (or may not) be defined as delimiters by the generic syntax, by each scheme-specific syntax, or by the implementation-specific syntax of a URI's dereferencing algorithm. If data for a URI com...
endsWith in JavaScript
...
UPDATE (Nov 24th, 2015):
This answer is originally posted in the year 2010 (SIX years back.) so please take note of these insightful comments:
Shauna - Update for Googlers - Looks like ECMA6 adds this function. The MDN article also shows a polyfill. https://developer.m...
Get current time as formatted string in Go?
...
All the other response are very miss-leading for somebody coming from google and looking for "timestamp in go"! YYYYMMDDhhmmss is not a "timestamp".
To get the "timestamp" of a date in go (number of seconds from january 1970...
What is the difference between “ is None ” and “ ==None ”
...
class Foo:
def __eq__(self,other):
return True
foo=Foo()
print(foo==None)
# True
print(foo is None)
# False
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Android ListView not refreshing after notifyDataSetChanged
... adapter.notifyDataSetChanged();
}
what you just have updated before calling notifyDataSetChanged() is not the adapter's field private List<Item> items; but the identically declared field of the fragment. The adapter still stores a reference to list of items you passed when you created th...