Two applications (App1 and App2) are accessing data in a Backing Map called "account bal," which contains account balances and USES the account number (a four-digit numeric string) as its key.

两个应用程序(App1和App2)正在访问名为“AccountBal”的Backingmap中的数据，Account Bal中包括帐户余额并使用帐户编号(一个四位数的数字字符串)作为其键。

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Specifies the unique numeric string that identifies the server session.

指定唯一的数字串来识别服务器会话。

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(unary plus) to convert the value to a number if it is a numeric string (previously it was completely ignored).

(一元加号)将改变数字字符串值为数值(之前此操作无影响)。

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(unary plus) to convert the value to a number if it is a numeric string (previously it was completely ignored).

(一元加号)将改变数字字符串值为数值(之前此操作无影响)。

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