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instantiate a class from a variable in PHP?
...com\company\lib;
//Works fine
$i = new MyClass();
$cname = 'MyClass';
//Errors
//$i = new $cname;
//Works fine
$cname = "com\\company\\lib\\".$cname;
$i = new $cname;
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how to File.listFiles in alphabetical order?
... }
}
} catch (Exception ex) {
logger.error(ex);
ex.printStackTrace();
}
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How does the @property decorator work in Python?
... return self
if self.fget is None:
raise AttributeError("unreadable attribute")
return self.fget(obj)
def __set__(self, obj, value):
if self.fset is None:
raise AttributeError("can't set attribute")
self.fset(obj, value)
def __de...
What is the fastest way to get the value of π?
...t 7, and three had 15, of course this is with doubles, so it might have an error based on its representation and the true calculation could be more accurate.
let pi_2 iters =
let rec loop_ a b t p i =
if i = 0 then a,b,t,p
else
let a_n = (a +. b) /. 2.0
...
Difference between static STATIC_URL and STATIC_ROOT on Django
...o static files to be found.
It would be thoughtful if Django spit out an error message stating you can't use a http(s):// with DEBUG = True
I had to change STATIC_URL to be '/static/'
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How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...ns still in Marshmallow (6.0.1). That said, I have only ever received this error once. So it doesn't seem to be a gigantic problem. Thank you for your thorough explanation.
– Knossos
Jan 13 '16 at 6:09
...
Timer & TimerTask versus Thread + sleep in Java
...tion may happen which can slow down your whole application. These kinds of errors are hard to diagnose and it's a good idea to prevent their existance.
The other aproach triggers the execution of the code that matters to you, i.e. NewUploadServer.getInstance().checkAndUploadFiles(); by calling the ...
T-SQL datetime rounded to nearest minute and nearest hours with using functions
...ond, '1/1/2000', .... vs datediff(second, 0 .... as you'll get an overflow error. seconds from 0 is too big I guess.
– Eric Twilegar
Feb 24 '16 at 16:54
...
Why doesn't django's model.save() call full_clean()?
...es an issue with the basic authentication system. You will get a ValidationError: Session with this Session key already exists. To avoid this, you need to add an if-statement for sender in list_of_model_classes to prevent the signal from overriding Django's default auth models. Define list_of_model_...
How do you push just a single Git branch (and no other branches)?
...u do git push.
Other valid options are:
nothing : Do not push anything (error out) unless a refspec is explicitly given. This is primarily meant for people who want to avoid mistakes by always being explicit.
matching : Push all branches having the same name on both ends. (default option prior to...