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What does numpy.random.seed(0) do?
...thing every time you run it.
To get the most random numbers for each run, call numpy.random.seed(). This will cause numpy to set the seed to a random number obtained from /dev/urandom or its Windows analog or, if neither of those is available, it will use the clock.
For more information on using ...
What is the difference between an expression and a statement in Python?
...rs, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python object. Examples:
3 + 5
map(lambda x: x*x, range(10))
[a.x for a in some_iterable]
yield 7
Sta...
Sticky and NON-Sticky sessions
...re served from server C.
Now, if the requests are being served from (physically) 3 different servers, each server has created a session object for you and because these session objects sit on three independent boxes, there's no direct way of one knowing what is there in the session object of the ot...
What is a NullPointerException, and how do I fix it?
...sign it to the variable before trying to use the contents of the variable (called dereferencing). So you are pointing to something that does not actually exist.
Dereferencing usually happens when using . to access a method or field, or using [ to index an array.
If you attempt to dereference num BEF...
R script line numbers at error?
...you the line number, but it will tell you where the failure happens in the call stack which is very helpful:
traceback()
[Edit:] When running a script from the command line you will have to skip one or two calls, see traceback() for interactive and non-interactive R sessions
I'm not aware of ano...
Parsing command-line arguments in C?
... access the enumeration down there. It's best to move the enumeration outside the function; you might even make op_mode a file-scope variable without external linkage (a fancy way of saying static) to avoid passing it to the function. This code does not handle - as a synonym for standard input, an...
Detecting when the 'back' button is pressed on a navbar
...wController has TRUE value when I'm poping the navigation stack programmatically using popToRootViewControllerAnimated - without any touch on the back button. Should I downvote your answer? (the subject says "'back' button is pressed on a navbar")
– kas-kad
Jan...
How can I set the default value for an HTML element?
...lect> element below would cause the <option> containing my provided "value" to be selected by default:
27 Ans...
“Java DateFormat is not threadsafe” what does this leads to?
...Java DateFormat not being thread safe and I understand the concept theoretically.
11 Answers
...
How to remove old Docker containers
...
If you want to use awk for this consider this command if you want do rm all stopped containers (without a error because of the first line): docker ps -a | awk 'NR > 1 {print $1}' | xargs docker rm
– masi
Jun 15 '14 at 1...