Constant expression

Generally speaking, a constant expression is an expression that the compiler can evaluate at compile-time.

一般来说, 常量表达式是编译器在编译时就能够计算出结果的表达式.

In C ++ there are places where constant expression ( Section 2.7 , p . 62 ) is required.

在C++中,有些地方需要放置常量表达式 ( 第2.7节 ).

Short and the value of the constant expression is representable in the type short.

在short类型Short和常量表达式的值是可表示的.

To resist being kidnapped by systems and mis-expression by constant replication?

借由不断的复制来抗拒被体系绑架,抗拒言不及义?

Qi's career as an artist was strongly shaped by his constant search for new forms of expression.

齐白石作为画家的职业生涯在他不断寻求新的表达方式中茁壮成长。

Character and the value of the constant expression is representable in the type char.

在char类型中,Character和常量表达式的值是可表示的.

Syntax takes a transformation expression consisting of template variables and constant expressions and returns the resulting syntax object.

syntax接受一个转换表达式（由模板变量和常量表达式组成）并返回产生的语法对象。

Based on the Rayleigh-Sommerfeld diffraction integral, the far-field expression for ultrashort pulsed Gaussian beams with constant waist width in a dispersive medium is derived without involving the paraxial approximation.

从瑞利-索末菲衍射积分公式出发，在不作近轴近似的前提下，得出了等束宽脉冲高斯光束在色散介质中的远场公式。

For example, the initializer of an enumerator must be a constant expression.

例如, 枚举成员的初始化式必须是常量表达式.

Constant expression not representable in type'| 1 '.

常数表达式无法在类型 “ |1”中表示.

By using the angular spectrum and complex analytic signal representations, the analytic propagation expression and its Fourier spectrum for ultrashort Gaussian pulsed beams with constant waist width in the far field are derived.

利用角谱法和复解析信号法推导出了等束宽超短高斯脉冲光束在远场的解析传输公式及其傅里叶谱。