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Generate 'n' unique random numbers within a range [duplicate]
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You could use the random.sample function from the standard library to select k elements from a population:
import random
random.sample(range(low, high), n)
In case of a rather large range of possible numbers, you could use itertools.islice with an infinite random generator:
import itertools...
How to add items to a spinner in Android?
...d:id="@+id/spinner"
android:layout_width="fill_parent"
android:drawSelectorOnTop="true"
android:prompt="@string/spin"
android:entries="@array/spinnerItems"
/>
Items definition in the file array.xml:
<resources>
<string-array name="spinnerItems">
<item...
How to remove files and directories quickly via terminal (bash shell) [closed]
...-type d -prune -o -print -exec rm -rf {} \;
Essentially it uses regex to select the directories to exclude from the results then removes the remaining files. Just wanted to put it out here in case someone else needed it.
s...
Can I start the iPhone simulator without “Build and Run”?
...mulator from the Xcode, and then on the dock, Ctrl + Click on the icon and select Keep in Dock
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Why is `[` better than `subset`?
...vars, drop = drop]. The problem is how to get from the unquoted subset and select arguments to something that you can validly pass to [.data.frame.
– joran
Oct 2 '17 at 21:33
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Replacing all non-alphanumeric characters with empty strings
...ter, since only the first occurrence of "^" is negating the meaning of the selection. [^\\p{IsAlphabetic}\\p{IsDigit}] works well.
– Bogdan Klichuk
Jan 19 '18 at 17:22
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Pass props to parent component in React.js
...list of services (with names and prices) and it will calculate a total the selected prices.
Children are blissfully ignorant
ServiceItem is the child-component in this example. It doesn’t have many opinions about the outside world. It requires a few props, one of which is a function to be called...
The definitive guide to form-based website authentication [closed]
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A cryptographic hash should not be used for password storage because user-selected passwords are not strong enough (i.e. do not usually contain enough entropy) and a password guessing attack could be completed in a relatively short time by an attacker with access to the hashes. This is why KDFs are...
Twig ternary operator, Shorthand if-then-else
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{{ (ability.id in company_abilities) ? 'selected' : '' }}
The ternary operator is documented under 'other operators'
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How can I change the copyright template in Xcode 4?
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Xcode 4 (and above) stores this on a per-project basis.
If you select the project in the Project Navigator (Cmd-1) and open the File Inspector (Cmd-Opt-1), you'll see a field for "Organization" under "Project Document".
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