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IntelliJ inspection gives “Cannot resolve symbol” but still compiles code

... First of all you should try File | Invalidate Caches and if it doesn't help, delete IDEA system directory. Then re-import the Maven project and see if it helps. In some weird cases compiled classes may report wrong info and confuse I...
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What is memoization and how can I use it in Python?

...orials using memoization in Python would be something like this: factorial_memo = {} def factorial(k): if k < 2: return 1 if k not in factorial_memo: factorial_memo[k] = k * factorial(k-1) return factorial_memo[k] You can get more complicated and encapsulate the memoization...
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PHP how to get local IP of system

... This is the solution that worked for me and that avoids calling shells, operating system commands and all sorts of stuff that can open security holes or raise odd issues later. – Dario Fumagalli Jul 17 '14 at 10:59 ...
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adding noise to a signal in python

...umpy as np import matplotlib.pyplot as plt t = np.linspace(1, 100, 1000) x_volts = 10*np.sin(t/(2*np.pi)) plt.subplot(3,1,1) plt.plot(t, x_volts) plt.title('Signal') plt.ylabel('Voltage (V)') plt.xlabel('Time (s)') plt.show() x_watts = x_volts ** 2 plt.subplot(3,1,2) plt.plot(t, x_watts) plt.title...
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Adjust UILabel height to text

...ne about some println's or just a line with only comments (then it says EXC_BAD_ACCESS code=2 as well) – TheBurgerShot Aug 8 '14 at 11:52 6 ...
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Check if object is a jQuery object

... isn't obj.__proto__.jquery instead of obj.constructor.prototype.jquery enough? just a bit short :) – Axel Jul 3 '17 at 9:35 ...
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How can I generate Unix timestamps?

... BSD date supports also +%s. Probably universal, as date is normally defined in POSIX.2. – Dereckson Nov 5 '17 at 15:41 ...
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AngularJS For Loop with Numbers & Ranges

... You have to watch out for things like this. The range function will get called multiple times for each item in the list. You can get nasty memory leaks and you're generating a lot of function calls. It almost seems easier to put the collection inside the controller. – Lucas ...
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How to add text inside the doughnut chart using Chart.js?

...ext based off the amount of text and the size of the doughnut. Here is a small script you can use to dynamically place any amount of text in the middle, and it will automatically resize it. Example: http://jsfiddle.net/kdvuxbtj/ It will take any amount of text in the doughnut sized perfect for ...
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passport.js passport.initialize() middleware not in use

.... I keep getting this exception after authentication success (I see the callback url on the browser): 7 Answers ...