In my application I have multiple variables that need to be accessed globally from the different functions of my script:
var a=1,b=2,c, ...;
Where "c" undefined at the beginning and takes value produced by some of the functions during scripts execution.
In order to declare them from within my "main" function I'm trying to use window object:
window.a=1;
window.b=2;
window.c;
This works, however I'm not sure if such approach is correct.
And is there is a way to avoid creation multiple window objects for each variable and combine them into more compact structure? Something like:
window.a=1,.b=2,.c;//---of course-this doesn't work
I was asking this question today too. It used to be the way when I last wrote javascript (mid-90s) and still seems to be the case see this resource
Related
First of all, don't bother answering "just use a newer version of Excel", I must use 4.0 for what I want to do, thanks.
.
Now, the question is simple (even if the answer may not be):
You can pass arguments in proper Excel functions (ex: =OPEN("foo.xls";3), opening foo.xls and updating all references without a prompt).
You can make custom functions (well, you can name ranges to call with parenthesis, ex: =CUSTOM_FUNCTION() and it will call that function until it hits return).
You can return values to the original function to use with =RETURN(foo).
.
Is it possible to have a custom function with custom arguments that you can call without storing them in cells, ex: you call =ADD_TWO_NUMBERS(1;2) calling ADD_TWO_NUMBERS(X;Y) (or whatever it needs to be for it to work) then =RETURN(x+y) returns 3 (obviously a stupid example, but just to explain my case).
I've tried to search for it, but I haven't found anything so far.
The docs only show examples for when a component promotes a single input. How do I use src_indices to indicate that only one of my promoted inputs takes a certain slice?
p.model.add_subsystem('ComputeWakePosition', ComputeWakePosition(num_wake_points_per_side=4),
promotes_inputs=['wake_upper_lengths',
'wake_lower_lengths',
'wake_upper_angles',
'wake_lower_angles',
'displaced_cw_coordinates'], <-- I want to specify src_indices for this input only.
promotes_outputs=['upper_wake_coordinates',
'lower_wake_coordinates'])
I think I would be able to just use connect for that input, but given that everything else I've written doesn't use it, it'd be nice if there was a way to avoid it.
There is a function called promotes that you can call on your group after you've added a subsystem. In your code above, you could remove the promotion of the displaced_cw_coordinates variable from your add_subsystem call and make a separate call something like this p.model.promotes('ComputeWakePosition', inputs=['displaced_cw_coordinates'], src_indices=[2,4,6,8])
I need to export the keys and values from map in Dart. In PHP I use for that purpose function extract():
$array=array('one'=>1,'two'=>2,'three'=>3);
extract($array);
But I don't know, how to do the same thing in Dart. Is there any special function or construct for it? Or how can I reach the same result with forEach()? Is there anybody, who could help me?
Update 1: My target is from the map like this, but much complicated (example taken from Dart up and running):
var gifts = {
// Keys Values
'first' : 'partridge',
'second' : 'turtledoves',
'fifth' : 'golden rings'
};
in which I want to rewrite the result by any simple function or forEach() loop:
// something like gifts.forEach()? but how?
into variables:
assert(first=='partridge');
assert(second=='turtledoves');
assert(fifth=='golden rings');
//wow, rewritten! The code can continue and use just the variables:
querySelector('#animal').text=first;
Dart is a statically declared language. You cannot create new variable names at runtime, from a map or in any other way.
In order to refer to a variable, it must already be declared. That means that even if you could introduce new variables, you could not have any references to it in your existing code.
If the variables are already declared, and you just want to assign the values to them, you can use the mirror system, but I wouldn't recommend that. It is much simpler to just access the values directly in the map.
How can I tell the Closure Compiler not to rename an inner function? E.g., given this code:
function aMeaninglessName() {
function someMeaningfulName() {
}
return someMeaningfulName;
}
...I'm fine with Closure renaming the outer function (I actively want it to, to save space), but I want the function name someMeaningfulName left alone (so that the name shown in call stacks for it is "someMeaningfulName", not "a" or whatever). This despite the fact that the code calling it will be doing so via the reference returned by the factory function, not by the name in the code. E.g., this is purely for debugging support.
Note that I want the function to have that actual name, not be anonymous and assigned to some property using that name, so for instance this is not a duplicate of this other question.
This somewhat obscure use case doesn't seem to be covered by either the externs or exports functionality. (I was kind of hoping there'd be some annotation I could throw at it.) But I'm no Closure Compiler guru, I'm hoping some of you are. Naturally, if there's just no way to do that, that's an acceptable answer.
(The use case is a library that creates functions in response to calls into it. I want to provide a version of the library that's been pre-compressed by Closure with SIMPLE_OPTIMIZATIONS, but if someone is using that copy of the library with their own uncompressed code and single-stepping into the function in a debugger [or other similar operations], I want them to see the meaningful name. I could get around it with eval, or manually edit the compressed result [in fact, the context is sufficiently unique I could throw a sed script at it], but that's awkward and frankly takes us into "not worth bothering" territory, hence looking for a simple, low-maintenance way.)
There is no simple way to do this. You would have to create a custom subclass of the CodingConvention class to indicate that your methods are "local" externs (support for this was added to handle the Prototype library). It is possible that InlineVariables, InlineFunctions, or RemoveUsedVariables will still try to remove the name and would also need to be fixed up.
Another approach is to use the source maps to remap the stack traces to the original source.
read the following section
https://developers.google.com/closure/compiler/docs/api-tutorial3#export
Two options basically, use object['functionName'] = obj.functionName or the better way
use exportSymbol and exportProperty both on the goog object, here is the docs link for that
http://closure-library.googlecode.com/svn/docs/closure_goog_base.js.html
-- edit
ah, i see now, my first answer is not so great for you. The compiler has some interesting flags, the one which might interest you is DEBUG, which you can pass variables into the compiler which will allow you to drop some debugging annotations in via logging or just a string which does nothing since you are using simple mode.
so if you are using closure you can debug against a development version which is just a page built with dependiencies resolved. we also the drop the following in our code
if(DEBUG){
logger.info('pack.age.info.prototype.func');
}
VBScript on ASP Classic contains an "int" function. (It rounds numbers towards -∞.) Suppose that some excessively "clever" coder has created a global variable named "int". Is there any way to get at the original function? I've tried all manner of workarounds with scoping and dodgy execs, but no dice. I suspect that it is impossible, but I'm hoping that someone will know more about it than I do.
EDIT: Thanks for the responses. Since y'all asked, the global variable, called "Int" (though unfortunately, vbscript is not case-sensitive), is a factory for a class similar to Java's Integer. The default property is essentially a one-arg constructor; i.e. "Int(42)" yields a new IntClass object holding 42. The default property of IntClass in turn simply returns the raw number.
The creator was trying to work around the lack of proper namespaces and static methods, and the solution's actually pretty seamless. Pass in an IntClass where an int is expected and it will automatically trigger the default property. I'm trying to patch the last remaining seam: that external code calling "int" will not round properly (because the constructor uses CLng).
Not that I know of, getref only works on custom functions not on build-ins. I would suggest renaming the custom'int' function and update all references to this custom ones. You can use the search function visual studio (express) or any other tool of your liking for this. Shouldn't be to much work.
I didn't think reserved words would be allowed for function names or variables.
Duncanson's right. Do the pain and rename int. Chances are there are worse things going on than just this.
(why would someone make a global variable named int... that's going to take some thinking)
Or you can use CInt instead on Int
response.write trim(cint(3.14)) + "<br>"
Wrong!!
See NobodyMan comments