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How do I check if an array includes a value in JavaScript?
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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...s in the array, despite h[1] still giving us a value? Here’s a hint:
h[42] #=> ["a", "b"]
The array returned by each [] call is just the default value, which we’ve been mutating all this time so now contains our new values. Since << doesn’t assign to the hash (there can never be a...
An error occurred while installing pg (0.17.1), and Bundler cannot continue
I just installed Rails 4.0.2 and when creating a new app, in the bundle stage I get:
16 Answers
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Any way to properly pretty-print ordered dictionaries?
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edited Apr 9 '14 at 12:09
user11784
2344 bronze badges
answered Feb 4 '11 at 12:33
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Specifying an Index (Non-Unique Key) Using JPA
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With JPA 2.1 you should be able to do it.
import javax.persistence.Column;
import javax.persi...
Determine if map contains a value for a key?
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Does something along these lines exist?
No. With the stl map class, you use ::find() to s...
Python 2.7 getting user input and manipulating as string without quotations
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Use raw_input() instead of input():
testVar = raw_input("Ask user for something.")
input() ...
Find column whose name contains a specific string
...exactly match it. I'm searching for 'spike' in column names like 'spike-2' , 'hey spike' , 'spiked-in' (the 'spike' part is always continuous).
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Print new output on same line [duplicate]
...yword:
>>> for i in range(1, 11):
... print(i, end='')
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12345678910>>>
Note that you'll have to print() the final newline yourself. BTW, you won't get "12345678910" in Python 2 with the trailing comma, you'll get 1 2 3 4 5 6 7 8 9 10 instead.
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