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In which case do you use the JPA @JoinTable annotation?

... project_id name name task_id The Project_Tasks table is called a "Join Table". To implement this second solution in JPA you need to use the @JoinTable annotation. For example, in order to implement a uni-directional one-to-many association, we can define our entities as such: Proj...
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Project structure for Google App Engine

.... However, as it has grown, and features have been added, it has gotten really difficult to keep things organized - mainly due to the fact that this is my first python project, and I didn't know anything about it until I started working. ...
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Make a div fill up the remaining width

...div> <div id="middle-div"> middle div<br />bit taller </div> </div> divs will naturally take up 100% width of their container, there is no need to explicitly set this width. By adding a left/right margin the same as the two side divs, it's own contents is...
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Add CSS or JavaScript files to layout head from views or partial views

... The question specifically mentioned partial view and this highest rated answer doesn't address the issue! This may be an excellent solution for another query, but not this one. – vulcan raven May 3 '13 at 5...
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How to get current CPU and RAM usage in Python?

... Worked for me on OSX: $ pip install psutil; >>> import psutil; psutil.cpu_percent() and >>> psutil.virtual_memory() which returns a nice vmem object: vmem(total=8589934592L, available=4073336832L, percent=52.6, used=5022085120L, free=35602...
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How do I base64 encode (decode) in C?

... *output_length = 4 * ((input_length + 2) / 3); char *encoded_data = malloc(*output_length); if (encoded_data == NULL) return NULL; for (int i = 0, j = 0; i < input_length;) { uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0; uint32_t octet_b = ...
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warning about too many open figures

...the other axes untouched. plt.clf() clears the entire current figure with all its axes, but leaves the window opened, such that it may be reused for other plots. plt.close() closes a window, which will be the current window, if not specified otherwise. plt.close('all') will close all open figures....
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top -c command in linux to filter processes listed based on processname

Top lists all the processes, there are good options to filter the processes by username by using the option -u but I am wondering if there is any easy way to filter the processes based on processname listed under COMMAND column of the top output. ...
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node.js global variables?

... Globals are generally to be avoided, but if you really want to use them. The 3 statements below are all equivalent and will assign a var to the global scope: GLOBAL._ = require('underscore'); global._ = require('underscore'); _ = require('und...
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Is there a way to access method arguments in Ruby?

... "#{arg} = #{eval arg}" }.join(', ') Note: since this answer was originally written, in current versions of Ruby eval can no longer be called with a symbol. To address this, an explicit to_s has been added when building the list of parameter names i.e. parameters.map { |arg| arg[1].to_s } ...