These two steps allow me to effectively remove the conditional check in the validate method and let OVal do it for me, as shown in Listing 11.
这两步让我能够有效地去除validate方法中的条件检验，让OVal为我完成这些，如清单11所示。
Connect the first data flow operator to the second using the green check mark in the upper right corner to make a conditional connection.
使用右上角的绿色对勾把第一个数据流操作符连接到第二个，这会建立有条件连接。
To create a filter to check for normal blood pressure, you would apply conditional logic to the BP intermediate object fields systolic and diastolic, as shown in Figure 7.
要创建一个检查正常血压的过滤器，需要向BP中间对象字段systolic和diastolic应用条件逻辑，如图7所示。
A programming pattern that USES a conditional statement to check for and handle circumstances that might cause an error.
守卫：一种编程模式。使用一些条件语句来检验和处理一些有可能导致错误的情况。
Avoid function calls in Boolean conditional statements. Assign into local variables and check on them.
避免在条件中直接调用返回布尔值的函数。把返回值赋值给一个局部变量来使用。
Avoid function calls in Boolean conditional statements. Assign into local variables and check on them.
避免在条件中直接调用返回布尔值的函数。把返回值赋值给一个局部变量来使用。
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