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Difference between __str__ and __repr__?
...ily mean end-user. It's the client or user of the object. So if its an SDK then the SDK developers will use __str__ so normal developers have readable object. On the other hand, __repr__ is for the SDK developers themselves.
– Shiplu Mokaddim
Jan 9 at 13:16
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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...lly the object does not exist. How will you catch it with an exception and then print out the name of the object? It just does not exist. Not even on stack..
– Aniket Inge
Feb 9 '13 at 11:45
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How to get string objects instead of Unicode from JSON?
...nce. Mark's answer decodes the JSON text fully first with unicode strings, then recurses through the entire decoded value to convert all strings to byte strings. This has a couple of undesirable effects:
A copy of the entire decoded structure gets created in memory
If your JSON object is really de...
Javascript web app and Java server, build all in Maven or use Grunt for web app?
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Then there's also the frontend-maven-plugin: https://stackoverflow.com/a/19600777/320399
It downloads Node and NPM for you (locally to your project), downloads Grunt via that NPM (run by that Node) and then runs Grunt (via th...
Instance variables vs. class variables in Python
... an "inside-out" manner, meaning the most local objects are checked first, then outer layers are checked in succession.
In your example above, let's say you're looking up the path attribute. When it encounters a reference like "self.path", Python will look at the instance attributes first for a mat...
How to remove/ignore :hover css style on touch devices
...and it can even be disturbing if a tablet triggers it on click/tap because then it might stick until the element loses focus. To be honest, I don't know why touch devices feel the need to trigger :hover in first place - but this is reality, so this problem is reality as well.
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How to prevent Browser cache for php site
...bugging" flag or not. Why aren't you using the actual mtime of the file? Then you'd literally never need to update the PHP, and caches wouldn't become completely and fantastically useless. Or just deliver your statics with a properly configured HTTP server like Nginx or Apache that sets a proper ...
How to create a unique index on a NULL column?
...identity(1,1) primary key,
X int NULL,
nullbuster as (case when X is null then pk else 0 end),
CONSTRAINT dupNulls_uqX UNIQUE (X,nullbuster)
)
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E731 do not assign a lambda expression, use a def
...ne could also use functools.partial: f = partial(operator.add, offset) and then a = list(map(f, simple_list)).
– Georgy
Nov 18 '18 at 18:33
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What's the idiomatic syntax for prepending to a short python list?
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Also, if you want to prepend a list to a list then using insert won't work as expected. but this method does!
– gota
Aug 29 '18 at 15:55
add a com...