英語 での Undefined value の使用例とその 日本語 への翻訳
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Undefined Value Allowed.
What Is an Undefined Value?
Undefined Value Not allowed.
So, x is assigned the undefined value.
Returns the undefined value if the array is empty, although this may also happen at other times.
So, x is assigned the undefined value.
The distinction is that undefined values can't format your hard drive or produce other undesirable effects.
That is a literal undef(), not an undefined value.
(W uninitialized) An undefined value was used as if it were already.
Uninitialized variables have the undefined value.
However, the undefined value can be specified for the dependent variable only for TYPE2 and TYPE4 routines with 2 dependent variables.
We say that⊥ is the completely"undefined" value or function.
Use NOT_SET in expressions Reviewhow to use NOT_SET in expressions to indicate undefined values.
If there are no elements in the array, returns the undefined value(although this may happen at other times as well).
Previously to 6.1, variables were initialized with an undefined value.
If you want an array element to exist but have an undefined value, use the undefinedvalue instead of the delete operator.
Null is used to represent a missing or undefined value.
When the transform is changed, undefined values are taken from the prior transform, or from default if there is no prior transform.
Reading of data other than the representation value is treated as an undefined value.
Note that gnuplot quietly ignores undefined values, so the final branch of the function(1/0) will produce no plottable points.
Note: for all types,you can use null to remove option value( undefined value).
Arithmetic that operates on undefined values is considered to produce a undefined value instead of producing undefined behavior.
If no test yields true, andthe last clause is not the fourth form(else clause), an undefined value is returned.
The undefined value of the dependent variable assumes a case where the bar is always drawn from the coordinate axis to a specified position, for a subroutine in which the top and bottom position of the bar is specified, such as in a bar graph.
Returns a Boolean value telling whether EXPR has a value other than the undefined value undef.
Log("x's value is",x)//logs"x's value is undefined" Learn more General knowledge Undefined value on Wikipedia Technical reference JavaScript data types and data structures.
You can use the defined() operator to determine whether a scalar value is defined(this has no meaning on arrays or hashes), and the undef()operator to produce an undefined value.
Empty string data will be read as follows:as an empty string in case of text type: as undefined value in case of the other type.
Uninitialized variables have the value undefined.