如何在 jshell 的 /set truncation 命令中使用选择器？
How to use selectors in /set truncation command in jshell?
我正在使用 jshell 并想截断显示在 jshell 控制台上的非常大的消息。
为此，我得到了 /set truncate 命令，它说：
If the values are too long, then they are truncated when displayed. Use the /set truncation command to set the maximum length shown for a value. If no settings are entered with the command, then the current setting is displayed.
Below are the relevant selector kinds for truncation.
|
| The case selector kind describes the kind of snippet. The values are:
| vardecl -- variable declaration without init
| varinit -- variable declaration with init
| expression -- expression -- note: {name}==scratch-variable-name
| varvalue -- variable value expression
| assignment -- assign variable
| The action selector kind describes what happened to the snippet. The values are:
| added -- snippet has been added
| modified -- an existing snippet has been modified
| replaced -- an existing snippet has been replaced with a new snippet
任何人都可以建议案例选择器或动作选择器的用例吗？？
want to truncate the very big message displayed on jshell console.
这取决于您想截断消息的类型。 case 选择器将帮助您决定类型和 action 选择器将帮助您决定何时这样做。例如添加片段、修改等
How to use selectors in /set truncation command in jshell?
同一文档中的示例很好地列出了这些：
/set truncation mymode 45 expression
/set truncation mymode 0 varinit-modified,replaced
suggest the use cases of the case selectors or the action selectors??
定义的文档
一个反馈模式 # 设置截断 section :
mymode: /set truncation mymode 100
mymode: /set truncation mymode 300 varvalue
# default truncation
mymode: String big = IntStream.range(0,1200).mapToObj(n -> "" + (char) ('a' + n % 26)).collect(Collectors.joining())
big ==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuv ... fghijklmnopqrstuvwxyzabcd"
# default truncation
mymode: big + big
==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghi ... yzabcdefghijklmnopqrstuvwxyzabcd"
# we can see the overriden truncation value in the next statement
mymode: big
big ==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl...jklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcd"`
我正在使用 jshell 并想截断显示在 jshell 控制台上的非常大的消息。
为此，我得到了 /set truncate 命令，它说：
If the values are too long, then they are truncated when displayed. Use the /set truncation command to set the maximum length shown for a value. If no settings are entered with the command, then the current setting is displayed.
Below are the relevant selector kinds for truncation.
|
| The case selector kind describes the kind of snippet. The values are:
| vardecl -- variable declaration without init
| varinit -- variable declaration with init
| expression -- expression -- note: {name}==scratch-variable-name
| varvalue -- variable value expression
| assignment -- assign variable
| The action selector kind describes what happened to the snippet. The values are:
| added -- snippet has been added
| modified -- an existing snippet has been modified
| replaced -- an existing snippet has been replaced with a new snippet
任何人都可以建议案例选择器或动作选择器的用例吗？？
want to truncate the very big message displayed on jshell console.
这取决于您想截断消息的类型。 case 选择器将帮助您决定类型和 action 选择器将帮助您决定何时这样做。例如添加片段、修改等
How to use selectors in /set truncation command in jshell?
同一文档中的示例很好地列出了这些：
/set truncation mymode 45 expression
/set truncation mymode 0 varinit-modified,replaced
suggest the use cases of the case selectors or the action selectors??
定义的文档 一个反馈模式 # 设置截断 section :
mymode: /set truncation mymode 100
mymode: /set truncation mymode 300 varvalue
# default truncation
mymode: String big = IntStream.range(0,1200).mapToObj(n -> "" + (char) ('a' + n % 26)).collect(Collectors.joining())
big ==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuv ... fghijklmnopqrstuvwxyzabcd"
# default truncation
mymode: big + big
==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghi ... yzabcdefghijklmnopqrstuvwxyzabcd"
# we can see the overriden truncation value in the next statement
mymode: big
big ==> "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijkl...jklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcd"`