From 642f44d26d745bfbc3d38de159ec936c146193b9 Mon Sep 17 00:00:00 2001
From: samlior <samlior@foxmail.com>
Date: Thu, 22 Jun 2023 18:00:03 +0800
Subject: [PATCH] Improve bitmap index

---
 content/docs/milestone_2/tick-bitmap-index.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/content/docs/milestone_2/tick-bitmap-index.md b/content/docs/milestone_2/tick-bitmap-index.md
index 05e16942..b5d8f8b6 100644
--- a/content/docs/milestone_2/tick-bitmap-index.md
+++ b/content/docs/milestone_2/tick-bitmap-index.md
@@ -99,14 +99,14 @@ After finding word and bit positions, we need to make a mask. A mask is a number
 bit position of the tick. To find the mask, we simply calculate `2**bit_pos` (equivalent of `1 << bit_pos`):
 ```python
 mask = 2**bit_pos # or 1 << bit_pos
-print(bin(mask))
-#0b10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+print(format(mask, '#0258b'))                                             ↓ here
+#0b0000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 ```
 
 Next, to flip a flag, we apply the mask to the tick's word via bitwise XOR:
 ```python
 word = (2**256) - 1 # set word to all ones
-print(bin(word ^ mask))                                                   ↓ here
+print(format(word ^ mask, '#0258b'))                                      ↓ here
 #0b1111111111111111111111111111111111111111111111111111111111111111111111101111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
 ```
 
@@ -115,8 +115,8 @@ You'll see that 184th bit (counting from the right starting at 0) has flipped to
 If a bit is zero, it'll set it to 1:
 ```python
 word = 0
-print(bin(word ^ mask))
-#0b10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
+print(format(word ^ mask, '#0258b'))                                      ↓ here
+#0b0000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 ```
 
 ### Finding Next Tick