scope

问题 I am trying to reduce the number of Uses and am running into problems with Enums (* original unit, where types are defined etc *) unit unit1; type TSomeEnumType = (setValue1, setValue2, ...); ... (* global unit where all types are linked *) unit unit2; uses unit1; type TSomeEnumType = unit1.TSomeEnumType; ... (* form unit that will use the global unit *) unit unitform; uses unit2; ... procedure FormCreate(Sender : TObject); var ATypeTest : TSomeEnumType; begin ATypeTest := setValue1; (* error

问题 I am coming back to writing code in Java after a long gap - most of my coding work over the past few years has been in PHP & JavaScript - and am discovering that I have to work harder to satisfy the Java compiler which is far more rigorous about issues such as variable scope and exception handling. A piece of code that caused me some trouble is shown below File file = new File(path, fname); FileOutputStream stream = null; try { stream = new FileOutputStream(file); stream.write(tosave.getBytes

问题 I am having scope issues with returning a Scrapy item (players) in my pipeline. I'm fairly certain I know what the issue is but I'm not sure how to integrate the solution into my code. I am also certain that I now have the code correctly written for the pipeline to process. It's just I've declared the players item inside the parseRoster() function so I know it's scope is only limited to that function. Now my question is, where do I need to declare a players item in my code for it to be

问题 First of all, excuse me for the bad title. I'm still so confused about this behavior, that I wasn't able to describe it; however I was able to reproduce it and broke it down to an (goofy) example. Please, could you be so kind and explain why other.list appears to be full of NULL s after calling lapply() ? some.list <- rep(list(rnorm(1)),33) other.list <- rep(list(), length = 33) lapply(seq_along(some.list), function(i, other.list) { other.list[[i]] <- some.list[[i]] browser() }, other.list) I

问题 So I have a class.. In its constructor I include the code which connects me to my database via the mysqli extension: class MyClass { public function __construct() { include("dbconnect"); } } dbconnect looks like this: $host = "localhost"; $user = "user"; $pass = "123"; $database = "myDatabase"; $mysqli = new mysqli($host, $user, $pass, $database); $mysqli->set_charset('utf8-bin'); Now to my problem: Since mysqli can be used OOP-Style, how do I get access to the variable in MyClass? function

问题 I'm trying out the Windows API, and I've run into a lot of problems. The most recent is this: I included Windows.h, and temporarily Winuser.h, yet the MonitorFromWindow (and the associated fields, like MONITOR_DEFAULTTONEAREST) are missing. Specifically, ...'MONITOR_DEFAULTTONEAREST' was not declared in this scope and ...'MonitorFromWindow' was not declared in this scope. Other methods show up just fine, like LoadImage and CreateWindow. Is there some inclusion I'm missing? I don't think it's

问题 someone knows how to turn off the global scope in XText 2.9? I want to turn off the global scope in order to only can access the elements of the files that I import. For example: file1.mydsl: element A(C){ ; } subelement C{ ; } file2.mydsl: element B(C){ ; } This should return an error in file2.mydsl because I haven't imported "file1.mydsl". I should add the line - import "file1.mydsl" - to avoid the error. How can I do that in Xtext 2.9? I have a working code that does what I want but the

问题 What is the default global variable_scope in Tensorflow? How can I inspect the object? Does anyone have ideas about that? 回答1: Technically, there's no global variable scope for all variables . If you run x = tf.Variable(0.0, name='x') from the top level of your script, a new variable x without a variable scope will be created in the default graph. However, the situation is a bit different for tf.get_variable() function: x = tf.get_variable(name='x') The first thing it does is calls tf.get

问题 How can I redeclare a variable from a different block in a short variable declaration? func f() (err os.Error) { proc, err := os.StartProcess(blah blah blah) // the new err masks the return value? } There's a long thread about this, and an issue, but I'm interested in how to work around this for the time being. 回答1: The Go specification for short variable declarations is clear: a short variable declaration may redeclare variables provided they were originally declared in the same block with

问题 Swift documentation says that closures and nested functions can capture values while global functions can not. Why then this is not a compilation error (in fact it looks like the global funciton myFunc() captures the value.) var myInt = 0 func myFunc() { myInt+=1 } print(myInt) //prints 0 myFunc() print(myInt) //prints 1 I am running this in Xcode playground, could that have something to do with it? Thanks 来源： https://stackoverflow.com/questions/36716013/global-functions-and-capturing-values