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How to tell which version of a gem a rails app is using

... | edited Dec 4 '13 at 16:09 aldo.roman.nurena 1,1701010 silver badges2525 bronze badges answered Oct 26...
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Can you do this HTML layout without using tables?

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Plot two graphs in same plot in R

... phoxis 48.9k1212 gold badges6868 silver badges109109 bronze badges answered Apr 1 '10 at 23:33 bnaulbnaul 15k44 gold badges27...
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CASCADE DELETE just once

... answered Sep 24 '08 at 19:25 palehorsepalehorse 21.5k33 gold badges3636 silver badges4747 bronze badges ...
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How to update a plot in matplotlib?

...tion: import matplotlib.pyplot as plt import numpy as np x = np.linspace(0, 6*np.pi, 100) y = np.sin(x) # You probably won't need this if you're embedding things in a tkinter plot... plt.ion() fig = plt.figure() ax = fig.add_subplot(111) line1, = ax.plot(x, y, 'r-') # Returns a tuple of line obj...
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Why is it impossible to build a compiler that can determine if a C++ function will change the value

...possible function. Here's an easy example: void foo() { if (bar() == 0) this->a = 1; } How can a compiler determine, just from looking at that code, whether foo will ever change a? Whether it does or doesn't depends on conditions external to the function, namely the implementation of bar....
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Working with select using AngularJS's ng-options

... 800 One thing to note is that ngModel is required for ngOptions to work... note the ng-model="blah"...
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Java String remove all non numeric characters

Trying to remove all letters and characters that are not 0-9 and a period. I'm using Character.isDigit() but it also removes decimal, how can I also keep the decimal? ...
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What is the difference between const_iterator and non-const iterator in the C++ STL?

... answered Nov 21 '08 at 17:39 Dominic RodgerDominic Rodger 87.2k2828 gold badges185185 silver badges205205 bronze badges ...
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How would I skip optional arguments in a function call?

... answered Jun 30 '09 at 23:35 zombatzombat 84.8k2121 gold badges148148 silver badges160160 bronze badges ...