If a specific attribute returns a specific value, I want to assign a value to the variable. Here, if pr: all / [@ pr: name = current()/ @ cx: name] / pr: properties /(@ ls:middlename) is “cengie”,
Tag: variable
Flex – In ActionScript, there is no way to test whether the data type “function” exists
So I have a class and I instantiate a variable callback as follows:
public var callback:Function ; So far so good. Now, I want to add an event listener to this class and test whether there is
SHELL variable foundation detailed
1. Introduction to variables Variables are places where data is temporarily stored and data tags. The stored data exists in the memory space, and the data corresponding to the variable can be retri
Shell read-only variable
test.sh:
#!/bin/bash
myUrl=”http://www.google.com span>”
readonly myUrl
myUrl=”http://www.runoob.com span>” Output
bogon:Desktop macname $ ./test.sh
./test.sh: line 4: myUrl: reado
Record the special variables in the shell script
1. Special location variables
About the above related variables introduction , You can also refer to the man manual, execute the command “man bash”, and then search for the keyword “Special P
Shell Programming: Typeable variables
1. Through the declare and typeset commands
2, declare parameters are as follows
3. Example: p> Example 1: Declare as immutable, declare -r
$ var=hello
$ var=world
$ e
Use variables with regular expressions to find data in MongoDB (Meteor APP)
I need to get data from Mongodb, depending on what I’m searching for. It works fine in the next two examples:
//Example 1;
var variable = “car”; Items.find({“description”: variable}).fetch()
Environment variable settings in Linux
Three methods for setting environment variables under Linux: If you want to add a path to $PATH, you can do it like the following Do this:
1. Set in the console, disapproved This way, because
Retall new variables based on GREP in R
I have a variable actor, which is a string containing values such as “Guinea-Bissau Military Forces (1989-1992)” and a large number of other different values that are quite complex. I have been
Nginx – $ document_root variable cannot be used in the “root” instruction
I ran into this problem while setting up my nginx configuration. Does anyone know why this happens?
root /folder/my_root;
index index.php index.html index.htm;
error_page 404 /404 .html;
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