Zho:() 小于 ()（积木）

The  <  积木 is an 运算类积木 and a 菱形积木. The 积木 checks if the first value is less than the second value. If it is less, the block returns true; if not, it returns false.

This block works with letters too, as well as numbers. In Scratch, letters at the top of the alphabet (e.g. a, b, c) are worth less than letters at the end (e.g. x, y, z). In Scratch 1.3 and previous versions, it only accepted numbers.

用法示例
Some common uses for the <  block are below: 變數 [i v] 設為 [1] // start at the front 重複 (清單 [numbers v] 的項目數 :: list) 次 變數 [i2 v] 設為 [1] 重複直到 <<(清單第 (i) 項項目\( [numbers v] \) :: list) < (清單第 (i2) 項項目\( [numbers v] \) :: list)> 或 <(i2) > (清單 [numbers v] 的項目數 :: list)>> 變數 [i2 v] 改變 (1) end 添加 (清單第 (i) 項項目\( [numbers v] \) :: list) 為第 ((i2) + (1)) 項\( [numbers v] \) 如果 <(i2) < ((i) + (1))> 那麼 刪除第 ((i) + (1)) 項 \( [numbers v] \) 刪除第 (i) 項 \( [numbers v] \) end 變數 [i v] 改變 (1) end
 * If a group must be arranged in size, this block can easily do the job by iterating through a list and checking if each value is less than the rest until placement is detected. For example, if a list is supposed to be sorted from greatest to least, the following script can accomplish this:

如果 <<(score) < (清單第 (1 v) 項項目\( [Top Scores v] \) :: list)> 且 <(score) > (清單第 (2 v) 項項目\( [Top Scores v] \) :: list)>> 那麼 添加 (score) 為第 (2 v) 項\( [list v] \) end
 * Arranging a set of numbers/letters

變數 [i v] 設為 [1] 刪除第 [全部 v] 項 \( [evaluation v] \) 重複 (清單 [scores v] 的項目數 :: list) 次 如果 <(清單第 (i) 項項目\( [scores v] \) :: list) < (5)> 那麼 添加 [okay] 為第 (i) 項\( [evaluation v] \) // tells how the score is   如果 <(清單第 (i) 項項目\( [scores v] \) :: list) < (10)> 那麼 添加 [good] 為第 (i) 項\( [evaluation v] \) 添加 [great!] 為第 (i) 項\( [evaluation v] \) end end // if the score is lower than 5 變數 [i v] 改變 (1) end
 * Evaluating numbers/letters

如果 <(1 Health) < (2 Health)> 那麼 說出 [Player 2 wins]
 * Comparing different 变量s (e.g. comparing two characters' health in a game)

說出 [Player 1 wins] end

變數 [confirmed v] 設為 [0] // stores yes or no is the answer is complete and acceptable 重複直到 <(confirmed) = [1]> 詢問 [How good are my cookies?] 並等待 如果 <<(詢問的答案) < (1)> 或 <(詢問的答案) > (10)>> 那麼 說出 [The response must be from 1 through 10] (2) 秒 變數 [confirmed v] 設為 [1] end end
 * Asking for an opinion on a scale of 1 to 10

应用
The block can be replicated with the following code:

<<<(a) > (b)> 或 <(a) = (b)>> 不成立>

Less than or equal to
Sometimes it is necessary to know if a value is less than or equal to another value, but there is no block to do so. However, it can be worked around in two ways: <<(a) > (b)> 不成立>

<<(a) < (b)> 或 <(a) = (b)>> The first workaround is more efficient.

参见

 * 等于
 * 大于
 * 数字