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kandi X-RAY | clippy Summary
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Community Discussions
Trending Discussions on clippy
QUESTION
I have a program that displays the state of some commands ran in parallel
...ANSWER
Answered 2022-Mar-13 at 01:34The minimum requirement to guarantee no flicker when updating a terminal is: don't send one thing and then overwrite it with something else (within a single 'frame' of drawing). In the case of clearing, we can restate that rule more specifically: don't clear the regions that you're going to put text in. Instead, clear only regions that you know you aren't putting text in (in case there is previous text there).
The conventional terminal command set contains a very useful tool for this: the “clear to end of line” command. The way you can use it is:
- Move the cursor to the beginning of a line you want to replace the text in.
- Write the text, without any newline or CRLF at the end
- Write “clear to end of line”. (In
crossterm
, that'sClearType::UntilNewLine
.)
After sending the clear command, the rest of the line is cleared (just as if you had happened to write the exact number of spaces to completely fill the line). In this way, you need to keep track of which lines you're writing on, but you don't need to keep track of the exact width of each string you wrote.
The next step beyond this, useful for arbitrary 2D screen layouts, is to remember what text has previously been sent to the terminal, and only send what needs to be changed — in Rust, the tui
crate provides this, and you can also find bindings to the well-known C library curses
for the same purpose.
QUESTION
I was running my code through Clippy and it suggested changing the following:
...ANSWER
Answered 2022-Mar-07 at 12:38This was indeed a missed optimization opportunity that has now been corrected in LLVM. https://github.com/rust-lang/rust/issues/90609#issuecomment-1046037263 .
QUESTION
I'm trying to write a method on a struct that returns a closure. This closure should take a &[u8]
with an arbitrary lifetime 'inner
as an argument and return the same type, &'inner [u8]
. To perform its function, the closure also needs a (shared) reference to a member of the struct &self
. Here is my code:
ANSWER
Answered 2022-Feb-12 at 01:57The problem is here:
QUESTION
I'm trying to create an elrond smart contract that would allow multiple elements to be sent at once to reduce the number of transactions to send the initial information to the contract.
To do so, I'm using an endpoint that takes into an argument a VarArgs of MultiArg3
...ANSWER
Answered 2021-Dec-29 at 17:40Since you are using a struct the ManagedBuffer
inside the struc are nested encoded. Which means you need to add the length of the ManagedBuffer
before it.
Luckily there is a shortcut for that by using the nested:
prefix.
So your arguments would look like this:
QUESTION
How to use rustup
to install/use a specific history version of the component like: rustfmt
, clippy
?
My intention is that i would like to lint my code base always on a specific version of the components like rustfmt
, clippy
, then only upgrade the versions after i purposely did the evaluation, instead of randomly moving to the latest version.
ANSWER
Answered 2021-Nov-25 at 02:53When installed through rustup
, the version of rustfmt
, cargo
, clippy
and other components is tied to the version of Rust you are currently using, not the latest version.
For example, on my system I get different versions of clippy
if I specify +stable
(1.56.1) or +nightly
(1.58.0-nightly):
QUESTION
I have a hard time fixing the needless collect clippy warning.
...ANSWER
Answered 2021-Oct-02 at 01:13This is a known issue with current Clippy. It tries to point out that collecting an iterator first and then calling contains()
, len()
, etc. on the collection is usually unnecessary. Yet current Clippy does not take into account that in your case the result of collect()
is used multiple times during the loop, saving you from re-executing the lines().map()
-iterator every iteration of that loop.
It is a false positive.
You can mark the method or function with #[allow(clippy:needless_collect)]
to suppress the lint.
QUESTION
What is a clean way to fix the code below with minimal impact on readability?
...ANSWER
Answered 2021-Sep-01 at 04:25First, please read this QA from TypeScript 3.x days where someone was asking essentially the same question as yourself: TypeScript const assertions: how to use Array.prototype.includes?
Now, in your case, as an alternative to @CertainPerformance's suggestion of unknown[]
(which loses type information), you can legally widen fruits
to readonly string[]
(without using as
), which is compatible with Fruit
and Food
:
QUESTION
Suppose I have three crates: foo
, bar
, and baz
.
Cargo.toml
:
ANSWER
Answered 2021-Aug-30 at 00:30This is workspace's property. bjorn3 said on Zulip:
If foo, bar and baz are all compiled together, the heap feature will be globally enabled for bar if either foo or baz depends on it. Cargo will take the union of all the features each dependent crate requires and compile dependencies once with these features.
So, bar
is compiled with the heap
feature because baz
requires it, its feature is also enabled when foo
is compiled. Thus, both foo
's and bar
's global allocators are enabled simultaneously, causing the error.
QUESTION
I was wondering if it would be possible to replicate only with CSS the Windows 7 Aero styles for Profile Images.
The inner part is simple and I'll skip it for the question but for the outer border, this was the best I could make:
...ANSWER
Answered 2021-Aug-13 at 22:34I found the question quite interesting and the only way that seemed to work was using clip-path
, hope it's what you're looking for
QUESTION
A similar question was asked for Eclipse: Add Java Docs in Eclipse working on OpenJDK
I found /usr/lib/jvm/java-11-openjdk-amd64/lib/src.zip on my system.
Building and runing a source file works. Documentation is shown for dependencies loaded via Maven. The documentation for the Java standard library is missing.
Examples:
hovering over
...ANSWER
Answered 2021-Jul-14 at 09:21You could try using this extension pack (it contains the extension Language Support for Java(TM) by Red Hat that gives the information you're looking for when hovering over Java code):
Make sure to also have tooltips enabled. You can read about enabling them here.
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