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How can I get nth element from a list?
...hat the standard library contains some such partial functions (head, last, etc.). For safety, use an option type Maybe, or the Safe module.
Example of a reasonably efficient, robust total (for indices ≥ 0) indexing function:
data Maybe a = Nothing | Just a
lookup :: Int -> [a] -> Maybe a
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What is the difference between “def” and “val” to define a function
... x % 2 == 0)" function (not any other statement before i.e. println("val") etc. Invoking event2 with different parameters will actually invoke "(x => x % 2 == 0)" code, as only that is saved with event2.
scala> even2(2)
res7: Boolean = true
scala> even2(3)
res8: Boolean = false
Just to ...
Is it possible to declare a variable in Gradle usable in Java?
...recommend just loading properties from a property file (or config service, etc), because if it's not in "test" mode, then it's "production" mode & requires application logic. (That's the theory, anyway.)
– michael
Oct 3 '18 at 18:44
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Ideal Ruby project structure
...ew/clarification of the ideal project structure for a ruby (non-rails/merb/etc) project. I'm guessing it follows
4 Answers
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Vim: Creating parent directories on save
...nes the :W command. Ideally, I'd like to have all of :w!, :wq, :wq!, :wall etc work the same, but I'm not sure if it's possible without basically reimplementing them all with custom functions.
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How do I add more members to my ENUM-type column in MySQL?
...UM. ENUM is, at it's core, a mapping of 0 -> Option 1, 1-> Option 2, etc. Adding to that shouldn't cause an issue.
– JoshStrange
Feb 10 '15 at 20:07
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Using Position Relative/Absolute within a TD?
...his trick also suitable, but in this case align properties (middle, bottom etc.) won't be working.
<td style="display: block; position: relative;">
</td>
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Why is Swift compile time so slow?
... with high accuracy whether your refactorings (explicit casts, type hints, etc...) are lowering compile times for specific files or not.
NOTE: technically you could also do it with xcodebuild but the output is incredibly verbose and hard to consume.
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How can I write a heredoc to a file in Bash script?
...redoc to a file using sudo:
cat <<'EOF' | sed 's/a/b/' | sudo tee /etc/config_file.conf
foo
bar
baz
EOF
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How to run cron once, daily at 10pm
...It can be "Bourne shell (sh) , Bourne again shell (bash),Korn shell (ksh)..etc"
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