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Author SHA1 Message Date
Hunter Monroe
62c3e56247
doc: Bold "Diaconescu's theorem" (#3086) 2023-12-17 19:10:35 +00:00
Scott Morrison
8475ec7e36
fix: reference implementation ByteArray.copySlice (#2967) 
Fixes reference implementation of `ByteArray.copySlice`, as reported
https://github.com/leanprover/lean4/issues/2966.

Adds tests.

---------

Co-authored-by: Joachim Breitner <mail@joachim-breitner.de>
 2023-12-16 20:26:16 +00:00
Scott Morrison
c656e71eb8
chore: make List.all and List.any short-circuit (#2972) 
Changes the implementation of `List.all` and `List.any` so they
short-circuit. The implementations are tail-recursive.

This replaces https://github.com/leanprover/std4/pull/392, which was
going to do this with `@[csimp]`.
 2023-12-11 23:48:15 +00:00
Mario Carneiro
178ab8ef2e
fix: Option.getD eagerly evaluates dflt (#3043) 
Reported [on
Zulip](https://leanprover.zulipchat.com/#narrow/stream/348111-std4/topic/Panics.20in.20Std.2EHashMap.2Efind!/near/406872395).
The `dflt` argument of `Option.getD` is not evaluated lazily, as the
documentation says, because even after `macro_inline` the expression
```lean
match opt, dflt with
| some x, _ => x
| none, e => e
```
still has the semantics of evaluating `dflt` when `opt` is `some x`.
 2023-12-11 10:07:30 +00:00
Eric Wieser
c474dff38c
doc: document constructors of TransparencyMode (#3037) 
Taken from
https://github.com/leanprover-community/lean4-metaprogramming-book/blob/master/md/main/04_metam.md#transparency

I can never remember which way around `reducible` and `default` go, and
this avoids me needing to leave the editor to find out.
 2023-12-07 17:04:40 +00:00
Kyle Miller
bcbcf50442
feat: string gaps for continuing string literals across multiple lines (#2821) 
Implements "gaps" in string literals. These are escape sequences of the
form `"\" newline whitespace+` that have the interpretation of an empty
string. For example,
```
  "this is \
     a string"
```
is equivalent to `"this is a string"`. These are modeled after string
continuations in
[Rust](https://doc.rust-lang.org/beta/reference/tokens.html#string-literals).

Implements RFC #2838
 2023-12-07 08:17:00 +00:00
Joachim Breitner
34264a4b1d
doc: Improve docstrings around Array.mk,.data,.toList (#2771) 
following a discussion at

<https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Understanding.20the.20docstring.20for.20docs.23Array.2Edata/near/398705430>

---------

Co-authored-by: Mario Carneiro <di.gama@gmail.com>
 2023-11-29 08:49:13 +00:00
Joachim Breitner
37362658ab fix: eq_refl tactic’s name is eqRefl 
Previously, it has `name := refl`, which looked confusing in
[the
docs](https://leanprover-community.github.io/mathlib4_docs/Init/Tactics.html#Lean.Parser.Tactic.refl),
as there is no `refl` tactic,
 2023-11-21 18:59:22 +01:00
Adrien Champion
66aa2c46a8
doc: mention dite in ite docstring (#2924) 
Some beginners have trouble finding the `if h : c then t else e`
(`dite`) version of `ite`. This augments `ite`'s docstring to mention
the dependent version.
 2023-11-21 15:59:35 +01:00
Leni Aniva
ab36ed477e
feat: allow trailing comma in tuples, lists, and tactics (#2643) 2023-11-17 13:31:41 +01:00
tydeu
171837216a feat: IO.FS.Handle.lock/tryLock/unlock 2023-11-15 19:31:08 -05:00
tydeu
19c81a19ea feat: IO.FS.Handle.rewind/truncate 2023-11-15 19:31:08 -05:00
Sebastian Ullrich
2f35651308 perf: leak environments not freed before process exit 2023-11-14 17:33:04 +01:00
Sebastian Ullrich
62dc8d7308 feat: Runtime.markMultiThreaded/Persistent 2023-11-14 17:33:04 +01:00
Sebastian Ullrich
dbe1c7f459 fix: make ^ a right action, add NatPow and HomogeneousPow 2023-11-12 16:57:51 +11:00
Scott Morrison
f3c3a1b62d
feat: find Decidable instances via unification (#2816) 
Because `Decidable` carries data,
when writing `@[simp]` lemmas which include a `Decidable` instance on the LHS,
it is best to use `{_ : Decidable p}` rather than `[Decidable p]`
so that non-canonical instances can be found via unification rather than
typeclass search.

(Previously this behaviour was often being hidden by the default `decide :=
true` in `simp`.)
 2023-11-12 00:47:13 +00:00
Marcus Rossel
5189578a48
doc: fix typo in Array.Mem docstring (#2856) 2023-11-10 11:16:32 +00:00
Siddharth Bhat
145a4952e5 feat: add internal flag lean_has_llvm_backend 2023-11-02 23:21:47 +01:00
Mauricio Collares
cfe5a5f188
chore: change simp default to decide := false (#2722) 2023-11-02 10:06:38 +11:00
Parth Shastri
642bc5d8f3
fix: replace DecidableEq with BEq/LawfulBEq in List mem theorems (#2041) 2023-10-30 14:03:16 +11:00
Joachim Breitner
f74ae5f9c0
feat: Array.mem: Avoid DecidableEq, set up decreasing_trivial (#2774) 
The notation `a ∈ as` for Arrays was previously only defined with
`DecidableEq` on the elements, for (apparently) no good reason. This
drops this requirements (by using `a ∈ as.data`), and simplifies a bunch
of proofs by simply lifting the corresponding proof from lists.

Also, `sizeOf_lt_of_mem` was defined, but not set up to be picked up by
`decreasing_trivial` in the same way that the corresponding List lemma
was set up, so this adds the tactic setup.

The definition for `a ∈ as` is intentionally not defeq to `a ∈ as.data`
so that the termination tactics for Arrays don’t spuriously apply when
recursing through lists.
 2023-10-30 13:47:30 +11:00
Leonardo de Moura
175a6ab606 refactor: add Init/MetaTypes to workaround bootstrapping issues 
Motivation: we could not set `simp` configuration options at `WFTactics.lean`
 2023-10-29 09:38:23 -07:00
Leonardo de Moura
1abd5cc665 chore: add simp option unfoldPartialApp 
It is not being used yet, but we need to add it before solving issue #2042.
Reason: bootstrapping.
 2023-10-29 09:12:21 -07:00
Leonardo de Moura
b00c13a00e
chore: remove "paper cut" when using Fin USize.size (#2724) 2023-10-24 21:06:35 +11:00
Leonardo de Moura
50d0aced7f feat: add auxiliary lemma for simp 2023-10-23 06:19:19 -07:00
Leonardo de Moura
52f1000955 chore: update doc, add support for modn 2023-10-20 19:07:48 -07:00
Leonardo de Moura
9d02e0ee6f chore: remove unnecessary % operations at Fin.mod and Fin.div 
We now have the missing proofs `Nat.mod_le` and `Nat.div_le_self` in
core.
See:
https://github.com/leanprover/std4/pull/286#discussion_r1359807875
 2023-10-20 19:07:48 -07:00
Leonardo de Moura
419100d42b feat: add Simp.Config.ground for simplifying nested ground terms 
This is an experimental new feature. We need more bells and whistles,
and `cbv` tactic for improving its performance.
 2023-10-19 13:59:17 -07:00
tydeu
99b78bcc23 fix: stdin := .null in IO.Process.output 2023-10-12 08:55:26 +02:00
Scott Morrison
57e23917b6 fix: implementation of Array.anyMUnsafe 
move test
 2023-10-11 11:20:45 +02:00
Scott Morrison
97f5ad7804
chore: change trustCompiler axiom to True (#2662) 2023-10-11 06:59:03 +00:00
Scott Morrison
833e778cd5
chore: add axiom for tracking use of reduceBool / reduceNat (#2654) 2023-10-11 01:47:59 +00:00
int-y1
ce4ae37c19 chore: fix more typos in comments 2023-10-08 14:37:34 -07:00
Sebastian Ullrich
dc60150b5a chore: update domain 2023-09-20 15:13:27 -07:00
Joachim Breitner
b2d668c340
perf: Use flat ByteArrays in Trie (#2529) 2023-09-20 13:22:37 +02:00
Sebastian Ullrich
3e755dc0e1 fix: enforce linebreak between calc steps 2023-09-18 05:39:41 -04:00
Scott Morrison
c318d5817d feat: allow configuring occs in rw 2023-09-13 12:03:18 -07:00
Marcus Rossel
84bf315ac8 doc: fix comment for Unit 2023-09-05 07:52:06 +01:00
Mario Carneiro
ea60ac1443 doc: fix mid priority doc comment 2023-08-21 13:19:43 +02:00
Joachim Breitner
6b429fed8f
doc: fix markup in IO.RealWorld (#2430) 
so that
<https://leanprover-community.github.io/mathlib4_docs/Init/System/IO.html#IO.RealWorld>
looks good.
 2023-08-17 11:55:03 -07:00
Scott Morrison
f1412ddb45 feat: enable failIfUnchanged by default in simp 2023-08-16 10:14:23 -07:00
tydeu
736af918f5 doc: IO.Process.getPID tweak + IO.FS.Mode 2023-08-14 18:42:04 +02:00
Scott Morrison
61fea57e73 feat: add failIfUnchanged flag to simp 2023-08-13 09:49:25 -07:00
Junyan Xu
2aeeed13cf
fix: generalize Prod.lexAccessible to match Lean 3 (#2388) 
* fix: generalize Prod.lexAccessible to match Lean 3

* fix

* fix
 2023-08-09 08:54:53 -07:00
Marcus Rossel
8af25455ae doc: fix comment for Nat.sub 2023-08-09 08:54:24 -07:00
tydeu
c79c7c89b3 feat: IO.Process.getPID & IO.FS.Mode.writeNew 2023-08-08 16:23:43 -04:00
Siddharth
b9ec36d089
chore: get rid of all inline C annotations for LLVM (#2363) 2023-07-30 10:39:40 +02:00
Mario Carneiro
776bff1948 fix: repeat conv should not auto-close the goal 2023-07-27 18:15:35 -04:00
Bulhwi Cha
3b6bc4a87d style: remove unnecessary space characters 2023-07-23 16:11:11 +02:00
Mario Carneiro
dd313c6894 feat: add IO.FS.rename 2023-07-22 23:21:32 +02:00