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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
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tidyverse solutions now moved to the top.
– Aaron left Stack Overflow
Oct 11 '19 at 17:34
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Overloading Macro on Number of Arguments
...unctions:
int FOO4(int a, int b, int c, int d) { return a + b + c + d; }
Now you can use FOO with 2, 3 and 4 arguments:
FOO(42, 42) // will use makro function FOO2
FOO(42, 42, 42) // will use makro function FOO3
FOO(42, 42, 42, 42) // will call FOO4 function
Limitations
Only up to 63 argument...
Will the base class constructor be automatically called?
...tion and calls. In your Base class with a non-default constructor you must now either call that constructor explicitly from the derived class or add a default constructor explicitly in the base class.
Let's test this.....
// THIS WORKS!!!
class MyBaseClass0
{
// no default constructor - create...
Disabling Strict Standards in PHP 5.4
..., which means that my previous setting for error_reporting does not work now. My previous value was E_ALL & ~E_NOTICE & ~E_STRICT Should I just enable values one at a time?
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How do I access the request object or any other variable in a form's clean() method?
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UPDATED 10/25/2011: I'm now using this with a dynamically created class instead of method, as Django 1.3 displays some weirdness otherwise.
class MyModelAdmin(admin.ModelAdmin):
form = MyCustomForm
def get_form(self, request, obj=None, **kw...
'git branch -av' showing remote branch that no longer exists
...r. In other words, your local repo is reporting all the branches that is knows about. These could be local branches (like 'master') or remote branches that it has fetched from a remote. Since the last fetch, the 'production' branch of the remote repo has changed, but your local repo does not know...
What is the best way to create constants in Objective-C
...ne my research and found several methods to create constants, but I don't know which one to use:
2 Answers
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d3 axis labeling
... because your original answer put me on the right track, but the way it is now, future readers won't have to fiddle with it as much to work out what it all means. :-) Cheers.
– Michael Scheper
Jun 15 '15 at 17:03
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How does akka compare to Erlang? [closed]
...e lighter alternative to java for web apps.
– Chris Snow
Nov 30 '13 at 13:42
@FUD: maybe he meant 1000 Erlang instruct...
How can I parse a local JSON file from assets folder into a ListView?
... }
Log.e("data", json);
return json;
}
Now for parsing data in your activity:-
String data = getAssetJsonData(getApplicationContext());
Type type = new TypeToken<Your Data model>() {
}.getType();
<Your Data model> modelObject = new G...