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Type Checking: typeof, GetType, or is?
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All are different.
typeof takes a type name (which you specify at compile time).
GetType gets the runtime type of an instance.
is returns true if an instance is in the inheritance tree.
Example
class Animal { }
class Dog : Animal { }
void PrintTypes(Animal a) {
Console.WriteLine(a...
How can I selectively merge or pick changes from another branch in Git?
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You use the cherry-pick command to get individual commits from one branch.
If the change(s) you want are not in individual commits, then use the method shown here to split the commit into individual commits. Roughly speaking, you use git rebase -i ...
Accessing dict keys like an attribute?
...ute correctly raises AttributeError instead of KeyError
Supports [Tab] autocompletion (e.g. in jupyter & ipython)
Cons:
Methods like .keys() will not work just fine if they get overwritten by incoming data
Each AttrDict instance actually stores 2 dictionaries, one inherited and another one in ...
Android activity life cycle - what are all these methods for?
...lways followed by onStart()
onStart():
Called when the activity is becoming visible to the user. Followed by
onResume() if the activity comes to the foreground.
onResume():
Called when the activity will start interacting with the user. At this
point your activity is at the top of the...
Function pointers, Closures, and Lambda
...omehow and after a search online I didn't find really any analysis of this comparison.
12 Answers
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Create a Date with a set timezone without using a string representation
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Path of assets in CSS files in Symfony 2
...ir (Resources/public/images/devil.png)
Willing that twig takes that CSS, recompiles it into web/css/a.css and make it point the image in /web/bundles/mynicebundle/images/devil.png
I have made a test with ALL possible (sane) combinations of the following:
@notation, relative notation
Parse with c...
Returning a C string from a function
...me);
return szBuffer;
}
That is, your program will crash because the compiler (may/may not) have released the memory used by szBuffer by the time the printf() in main() is called. (Your compiler should also warn you of such problems beforehand.)
There are two ways to return strings that won't...
Why does this Java code compile?
In method or class scope, the line below compiles (with warning):
14 Answers
14
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Difference between add(), replace(), and addToBackStack()
...back stack. This means that the transaction will be remembered after it is committed, and will reverse its operation when later popped off the stack.
2) fragmentTransaction.replace(int containerViewId, Fragment fragment, String tag)
Description - Replace an existing fragment that was added to a co...