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How to convert Nonetype to int or string?
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In Python 3 you can use the "or" keyword too. This way:
foo = bar or 0
foo2 = bar or ""
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C++ - passing references to std::shared_ptr or boost::shared_ptr
...e count will be at least 1.
Class::only_work_with_sp(boost::shared_ptr<foo> sp)
{
// sp points to an object that cannot be destroyed during this function
}
So by using a reference to a shared_ptr, you disable that guarantee. So in your second case:
Class::only_work_with_sp(boost::share...
How to measure elapsed time in Python?
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Given a function you'd like to time,
test.py:
def foo():
# print "hello"
return "hello"
the easiest way to use timeit is to call it from the command line:
% python -mtimeit -s'import test' 'test.foo()'
1000000 loops, best of 3: 0.254 usec per loop
Do not try...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
... DialogFragment dialogFragment = (DialogFragment) fm.findFragmentByTag("foo");
if (dialogFragment != null)
{
dialogFragment.dismiss();
}
dialogFragment = GenericPromptSingleButtonDialogFragment.newInstance("title", "message", "button");
dialogF...
What does it mean if a Python object is “subscriptable” or not?
...d, the following are the only built-ins that are subscriptable:
string: "foobar"[3] == "b"
tuple: (1,2,3,4)[3] == 4
list: [1,2,3,4][3] == 4
dict: {"a":1, "b":2, "c":3}["c"] == 3
But mipadi's answer is correct - any class that implements __getitem__ is subscriptable
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Organizing a multiple-file Go project [closed]
...k like this:
~/projects/
bin/
pkg/
src/
mypack/
foo.go
bar.go
mypack_test.go
export GOPATH=$HOME/projects
$ go build mypack
$ go test mypack
Update: as of >= Go 1.11, the Module system is now a standard part of the tooling and the GOPATH concept is ...
Setting Objects to Null/Nothing after use in .NET
...with them is that it can actually keep them alive for longer.
e.g.
void foo()
{
var someType = new SomeType();
someType.DoSomething();
// someType is now eligible for garbage collection
// ... rest of method not using 'someType' ...
}
will allow the object referred by ...
How do you use $sce.trustAsHtml(string) to replicate ng-bind-html-unsafe in Angular 1.2+
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But... var x = sce.trustAsHtml('foo'); var y = sce.trustAsHtml('foo'); x==y; false ... So shouldn't this create an infinite digest loop since your function returns a new object ?
– rych
Oct 1 '13 at 20:06
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Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previ
...TION. So I had something like this:
Begin Transaction
If (@something = 'foo')
Begin
--- do some stuff
Return
End
commit
and it needs to be:
Begin Transaction
If (@something = 'foo')
Begin
--- do some stuff
Rollback Transaction ----- THIS WAS MISSING
Return
End
com...
How to redirect stderr to null in cmd.exe
...However following will do almost the opposite of what some may expect copy foo.txt con >> bar 2>nul. bar will contain the text one file(s) copied and the console will containt the content of foo.txt.
– Patrick Fromberg
Jul 2 '14 at 8:31
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