markdown 内存堆栈#study

Posted 2021-05-06

- vscode-setting

	- token: 287baaf561de3dd0fe46cadefb4ebca5760c7f2c
	
	- gist id: 8d64599d5e9390ad57e91d7ea136de2c
    
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- ConcurrentDictionary
	
		多线程字典
    
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- Parallel.ForEach

		多线程遍历
    
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- Task.Factory.StartNew

		Task.Factory.StartNew(() => { Parallel.ForEach(array, item =>{}); }).ContinueWith(t => {});
    
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- oracle drop if exists

      DECLARE
      NUM NUMBER;
      BEGIN
      SELECT COUNT(1) INTO NUM FROM USER_TABLES WHERE TABLE_NAME = UPPER('table') ;
          IF NUM=1 THEN
              EXECUTE IMMEDIATE 'DROP TABLE table';
          END IF;
      END;
      /
      CREATE table table
        
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- base64乱码

	在base64编码后 需要对url做一个替换 把“+”替换为 “%2B” ，因为url中如果有“+”，传到后台会变成空格然后解析乱码
    
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- WPF输入框响应回车事件

		<PasswordBox>
        	<PasswordBox.InputBindings>
            	<KeyBinding Command="{Binding StartVerify}" Key="Return" />
            </PasswordBox.InputBindings>
        </PasswordBox>
                        
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