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What are free monads?
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@PauloScardine You do not need the above answer in order to productively program in Haskell, even with free monads. In fact, I wouldn't recommend attacking the free monad in this way to someone who didn't have a background in category theory. There are plenty of ways to talk ...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...ET utf8 COLLATE utf8_general_ci;
Unless you need to sort data in Unicode order, I would suggest altering all your tables to use utf8_general_ci collation, as it requires no code changes, and will speed sorts up slightly.
UPDATE: utf8mb4/utf8mb4_unicode_ci is now the preferred character set/collat...
Default function arguments in Rust
...d to take a variable length slice of the enum variants. They can be in any order and length. The defaults are implemented within the function as initial assignments.
enum FooOptions<'a> {
Height(f64),
Weight(f64),
Name(&'a str),
}
use FooOptions::*;
fn foo(args: &[FooOpti...
What's better to use in PHP, $array[] = $value or array_push($array, $value)?
...ack naming convention and find it easy to remember, as it goes in the same order as the phrase: "like finding a needle (1) in a haystack (2)"
– rybo111
Aug 1 '14 at 9:39
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Change date of git tag (or GitHub Release based on it)
...fectly usable, it has the effect of putting your tags out of chronological order which can screw with build systems that look for the "latest" tag. But have no fear. Linus thought of everything:
# This moves you to the point in history where the commit exists
git checkout SHA1_OF_PAST_COMMIT
#...
How do I install Python OpenCV through Conda?
...I ran conda update --all and some libraries required a downgrade to 1.9 in order to run.
– mercergeoinfo
Nov 12 '15 at 9:23
2
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Fixed point vs Floating point number
... @BrianGordon: I didn't forget sign bits; I intentionally ignored them in order to have a simple description and not have to worry about the difference between minimum/maximum and smallest/largest. I also intentionally left out exponent biasing (which has nothing to do with the number of discrete v...
Setting an object to null vs Dispose()
...n the case where the user of the type has forgotten to dispose of it in an orderly manner. So if you open a FileStream but forget to call Dispose or Close, the finalizer will eventually release the underlying file handle for you. In a well-written program, finalizers should almost never fire in my o...
What's the right way to pass form element state to sibling/parent elements?
...ues" or you're passing the state of some data in the child component up in order to update the state. You changed the state in C1, and you want C2 to be aware of it, so, by updating the state in the Root component and re-rendering, C2's props are now in sync since the state was updated in the Root c...
PHP MySQL Google Chart JSON - Complete Example
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