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How do the Proxy, Decorator, Adapter, and Bridge Patterns differ?
... when you want to lazy-instantiate an object, or hide the fact that you're calling a remote service, or control access to the object.
Decorator is also called "Smart Proxy." This is used when you want to add functionality to an object, but not by extending that object's type. This allows you to do...
What is the difference between Ruby 1.8 and Ruby 1.9
...ts p.(1,2,3)
puts p[1,2,3]
Ruby 1.8.6
p = lambda {|a,b,c| a+b+c}
puts p.call(1,2,3)
Complex Numbers
Ruby 1.9
Complex(3,4) == 3 + 4.im
Decimal Is Still Not The Default
Ruby 1.9
irb(main):001:0> 1.2-1.1
=> 0.0999999999999999
Regex “Properties”
Ruby 1.9
/\p{Space}/
Ruby...
Passing an array to a function with variable number of args in Swift
...
Is Splatting in the language yet? I'm trying to call sumOf(...numbers)
– Noitidart
May 15 '19 at 11:24
1
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Changing Locale within the app itself
...
Is you preference activity being called from you main activity? you could place this in the on resume... @Override protected void onResume() { if (!(PreferenceManager.getDefaultSharedPreferences( getApplicationContext()).getString("listLanguage", "en") ...
How to print the full traceback without halting the program?
....will display the traceback of the last exception:
Traceback (most recent call last):
File "e.py", line 7, in <module>
raise TypeError("Again !?!")
TypeError: Again !?!
If you really need to access the original traceback one solution is to cache the exception infos as returned from ex...
No Exception while type casting with a null in java
...or not. If null then it simply prints the string "null". Otherwise it will call the toString method of that object.
Adding more details: Internally print methods call String.valueOf(object) method on the input object. And in valueOf method, this check helps to avoid null pointer exception:
return ...
In C, do braces act as a stack frame?
...
In C++, an object's destructor gets called at the end of its scope. Whether the memory gets reclaimed is an implementation-specific issue.
– Kristopher Johnson
May 3 '10 at 16:07
...
AngularJS : Clear $watch
...
$watch returns a deregistration function. Calling it would deregister the $watcher.
var listener = $scope.$watch("quartz", function () {});
// ...
listener(); // Would clear the watch
share...
Insert code into the page context using a content script
...m developer's claim--that the "structured clone" algorithm is used automatically--isn't true. bugs.chromium.org/p/chromium/issues/detail?id=260378#c18
– jdunk
Mar 28 '17 at 8:21
...
How to style CSS role
...e not wrong, but they rely on you using either a div or using the specific id. With this selector, you'll be able to have all kinds of crazy markup and it would still work and you avoid problems with specificity.
[role=main] {
background: rgba(48, 96, 144, 0.2);
}
div,
span {
padding: ...