importselect# 创建一个select对象selector=select.select([sys.stdin],[],[])# 循环等待输入whileTrue:# 等待输入ready_to_read,_,_=selector.select()# 如果有数据可读ifready_to_read:# 读取输入command=raw_input().lower()# 处理输入ifcommand=="commands":print'"look around"'print'"explore"'print...
condition after each iteration. Thus do...while loops always run at least once. for loops are more suitable when you have some iterator or variable(s) which value(s) need to be changed or incremented, decremented after each iteration. For example when iterating through arrays or collections....
FOR v_counter IN 20 .. 25 LOOP INSERT INTO temp_table (num_col ) VALUES ( v_counter ); END LOOP; INSERT INTO temp_table(num_col) VALUES (v_counter ); FOR v_counter IN REVERSE 20 .. 25 LOOP INSERT INTO temp_table (num_col ) VALUES ( v_counter ); END LOOP; END ; DROP TA...
while陳述句(statement)所建立的迴圈不像for迴圈,需要在一定的範圍內迭代;也不像if陳述句,只存在執行一次或不執行的狀況。只要陳述的條件為真True,while迴圈就會持續到天荒地老,或者電腦當掉。 如果你對for迴圈或if陳述句不熟悉,可以閱讀〈Python for 迴圈(loop)的基本認識與7種操作〉、〈Python if 陳述句的...
LLMs with MATLAB updated to support the latest OpenAI Models Large Languge model with MATLAB, a free add-on that lets you access... Toshiaki TakeuchiinGenerative AI 2 4 View Post 태그 for loop while loop inner for loop inner loop ...
loop的形式提供支持，Algo以For loop的形式提供支持，当然还有其它一些表达形式，后来因为采用for loop形式...
oracle 中for while loop 循环比较 我循环比较发现效率由高到底 for →while→loop 如图: 其一代码如下; start_time:=systimestamp; tt:=1; loop tt:=tt+1; exit when tt>xhtimes; end loop; end_time:=systimestamp; times:=to_number(to_char(end_time,'MISSFF'))-to_number(to_char(start_time...
{...// do something }}上面的代码你可能会得到下面的警告:Call to ‘Thread.sleep()’ in a loop, probably busy-waiting// 循环中调用...sleep 可能会导致忙等待 // 如 FLAG 变量状态未改变 那么线程可能一直循环,并不断进行线程挂起和唤醒原因是否正确主要原因和原文博主所说有很大的关系但不完全正确:...
do和for很类似,也有do循环联合(do-while) loop循环 loop起初是个联合,起初CPL语言,年代:1963年;loop-to起初的是NetRexx,年代:1996年。 loop联合:CPL、SETL。 loop独立:Arturo、Clojure、Ada、Rust。 其中loop衍生是L循环。 repeat循环 repeat-with,起初是1987年,语言:HyperTalk,继承者:AppleScript、Lingo、Inform...
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