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What it the significance of the Javascript constructor property?
...this.superclass = superClass.prototype;
...
};
this new f() would not call the constructor of superClass,so when you create a subClass,maybe you need call the superClass at first,like this:
SubClass = function() {
SubClass.superClass.constructor.call(this);
};
so the constructor propert...
What is the difference between a var and val definition in Scala?
... need to worry whether you have to make a copy of your queue or not before calling toNum. Naturally, I avoided reusing variables for other purposes, and no code outside this function sees them, so I don't need to worry about their values changing from one line to the next -- except when I explicitly...
Reduce left and right margins in matplotlib plot
...
One way to automatically do this is the bbox_inches='tight' kwarg to plt.savefig.
E.g.
import matplotlib.pyplot as plt
import numpy as np
data = np.arange(3000).reshape((100,30))
plt.imshow(data)
plt.savefig('test.png', bbox_inches='tight')
...
How do you do relative time in Rails?
...me_ago_in_words method (or distance_of_time_in_words), from ActiveSupport. Call it like this:
<%= time_ago_in_words(timestamp) %>
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How to access random item in list?
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@B.ClayShannon No. The upperbound in the Next(max) call is exclusive.
– Mehrdad Afshari
Feb 12 '16 at 3:20
1
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What is the difference between a thread and a fiber?
...o get right.
With a fiber, control only switches when you tell it to, typically with a function call named something like yield(). This makes concurrent data access easier, since you don't have to worry about atomicity of data structures or mutexes. As long as you don't yield, there's no danger o...
I'm getting Key error in python
...t;>> mydict['a']
'1'
>>> mydict['c']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'c'
>>>
So, try to print the content of meta_entry and check whether path exists or not.
>>> mydict = {'a':'1','b':'2'}
>>>...
How to format numbers? [duplicate]
...the browser's locale,
// or use a string like 'en-US' to override it.
{ minimumFractionDigits: 2 }
);
console.log(value);
// In en-US, logs '100,000.00'
// In de-DE, logs '100.000,00'
// In hi-IN, logs '1,00,000.00'
If you're using Node.js, you will need to npm install the intl ...
Maven Snapshot Repository vs Release Repository
...ts
These are specific, point-in-time releases. Released artifacts are considered to be solid, stable, and perpetual in order to guarantee that builds which depend upon them are repeatable over time. Released JAR artifacts are associated with PGP signatures and checksums verify both the authenticity...
Eclipse, regular expression search and replace
... the whole original search term. In this case I guess that would work coincidentally though.
– Walter Heck
Nov 28 '11 at 11:32
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