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Calling shell functions with xargs
...
Exporting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} b...
Is Python strongly typed?
... of a value doesn't change in unexpected ways. A string containing only digits doesn't magically become a number, as may happen in Perl. Every change of type requires an explicit conversion.
Dynamic typing means that runtime objects (values) have a type, as opposed to static typing where variables h...
How to update a record using sequelize for node?
I'm creating a RESTful API with NodeJS, express, express-resource, and Sequelize that is used to manage datasets stored in a MySQL database.
...
Unresolved external symbol in object files
...his error often means that some function has a declaration, but not a definition.
Example:
// A.hpp
class A
{
public:
void myFunc(); // Function declaration
};
// A.cpp
// Function definition
void A::myFunc()
{
// do stuff
}
In your case, the definition cannot be found. The issue could be ...
Python, remove all non-alphabet chars from string
I am writing a python MapReduce word count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
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Repeat a task with a time delay?
I have a variable in my code say it is "status".
12 Answers
12
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How do I create an abstract base class in JavaScript?
Is it possible to simulate abstract base class in JavaScript? What is the most elegant way to do it?
16 Answers
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Check if a user has scrolled to the bottom
...= $(document).height()) {
alert("bottom!");
}
});
You can test it here, this takes the top scroll of the window, so how much it's scrolled down, adds the height of the visible window and checks if that equals the height of the overall content (document). If you wanted to instead check i...
PhoneGap: Detect if running on desktop browser
...follow
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edited May 23 '17 at 12:18
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answered May 12 '12 at ...
How to get the currently logged in user's user id in Django?
...WARE_CLASSES setting.
The current user is in request object, you can get it by:
def sample_view(request):
current_user = request.user
print current_user.id
request.user will give you a User object representing the currently logged-in user. If a user isn't currently logged in, request.us...