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Why can't Python find shared objects that are in directories in sys.path?
...udes /usr/local/lib, and if it doesn't, add it and try again.
Some more information (source):
In Linux, the environment variable
LD_LIBRARY_PATH is a colon-separated
set of directories where libraries
should be searched for first, before
the standard set of directories; this
is useful...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...ault values for only new records so that they are available when rendering forms. before_save and before_create are too late and will not work if you want default values to show up in input fields.
after_initialize do
if self.new_record?
# values will be available for new record forms.
se...
JavaScript isset() equivalent
...od, this method is defined up in the prototype chain, because obj inherits form Object.prototype.
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jQuery change input text value
... a book) about jquery where I can really learn about selectors? especially form selectorS?
– Joricam
Apr 18 '11 at 21:52
7
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Simple example of threading in C++
...h execution, therefore blocks its own execution.
t1.join();
}
More information about std::thread here
On GCC, compile with -std=c++0x -pthread.
This should work for any operating-system, granted your compiler supports this (C++11) feature.
...
Ruby on Rails: Where to define global constants?
...rds immutable objects on your class boundary in Ruby and (2) you keep a uniform interface on your class with the possibility to adapt the return value later based on inherent state (e.g. by reading the colours from the DB) without changing the interface.
– Holger Just
...
In Javascript/jQuery what does (e) mean?
...ts methods, "e.preventDefault()", which should prevent the browser from performing the default action for that element.
Note: The handle can pretty much be named anything you want (i.e. 'function(billybob)'). The 'e' stands for 'event', which seems to be pretty standard for this type of function.
...
Why Qt is misusing model/view terminology?
...he behavior and data of the application domain, responds to requests for information about its state (usually from the view), and responds to instructions to change state (usually from the controller).
In light of that I would answer your three main concerns thusly:
In fact a Qt component "mana...
How can I pass data from Flask to JavaScript in a template?
My app makes a call to an API that returns a dictionary. I want to pass information from this dict to JavaScript in the view. I am using the Google Maps API in the JS, specifically, so I'd like to pass it a list of tuples with the long/lat information. I know that render_template will pass these ...
What's the difference between the data structure Tree and Graph?
...
A Tree is just a restricted form of a Graph.
Trees have direction (parent / child relationships) and don't contain cycles.
They fit with in the category of Directed Acyclic Graphs (or a DAG).
So Trees are DAGs with the restriction that a child can onl...