global

问题 Does global variables in CSS are less efficient in terms of memory or in terms of efficiency as local CSS variables? so basically my question is whether there's any benefit of having variable which is declared in the the global scope and can be accessed anywhere in the CSS opposed to variables which are declared within the code block of a particular selector and scoped locally in respect to the selector. when talking about global scope i mean: :root { --mainColor: red } and local scope means:

问题 Does global variables in CSS are less efficient in terms of memory or in terms of efficiency as local CSS variables? so basically my question is whether there's any benefit of having variable which is declared in the the global scope and can be accessed anywhere in the CSS opposed to variables which are declared within the code block of a particular selector and scoped locally in respect to the selector. when talking about global scope i mean: :root { --mainColor: red } and local scope means:

问题 Why can't we declare an array of 10000000 integers (or say, large enough) inside the main function or inside any function locally while it is possible globally? 回答1: tl;dr: space for local variables is limited. That's how CPU's and Operating Systems work. This is an implementation detail that is shared by many languages and implementations, e.g. C, C++ on typical desktop OS. Most platforms where the code runs on set aside some memory called the Stack to be used for return adresses and local

问题 I am trying to use a global variable across modules by importing the variable and modifying it locally within a function. The code and the output is below. The last output is not what I expected, I thought it should be 15 since it has been already modified in global scope by func3. Can anybody please explain why the last output is still 10. Thank you! test2.py myGlobal = 5 def func3(): global myGlobal myGlobal = 15 print "from 3: ", myGlobal test1.py from test2 import myGlobal, func3 def

问题 Here is the situation: I have one function which has local variable. I would like to assign that value to global variable and us it's value in another function. Here is the code: global_var = "abc"; function loadpages() { local_var = "xyz"; global_var= local_var; } function show_global_var_value() { alert(global_var); } I'm calling show_global_var_value() function in the HTML page but it shows the value = "xyz" not "abc" What am I doing wrong? 回答1: What you need to do apart from declaring

问题 I'm interesting, if who know what is the problem of this code bellow. I always get this error: ''attempt to call global 'contains' (a nil value)'' Here is the code: state1={10,11,20,21,22,23,24,30,31,32,33,34,35,36,37,38,39,40,45,46,47,48,49,50,51,69,72,73,74,85} state3={78} state4={1,2,3,4,5,6} playerskin=initArray2(32,0) wepskin=initArray2(32,0) function getPlayerData(id,d) if (d=="team") then if (player(id,"team")==1) then return "red" end if (player(id,"team")==2) then return "blu" end

问题 I'm interesting, if who know what is the problem of this code bellow. I always get this error: ''attempt to call global 'contains' (a nil value)'' Here is the code: state1={10,11,20,21,22,23,24,30,31,32,33,34,35,36,37,38,39,40,45,46,47,48,49,50,51,69,72,73,74,85} state3={78} state4={1,2,3,4,5,6} playerskin=initArray2(32,0) wepskin=initArray2(32,0) function getPlayerData(id,d) if (d=="team") then if (player(id,"team")==1) then return "red" end if (player(id,"team")==2) then return "blu" end

问题 I'm interesting, if who know what is the problem of this code bellow. I always get this error: ''attempt to call global 'contains' (a nil value)'' Here is the code: state1={10,11,20,21,22,23,24,30,31,32,33,34,35,36,37,38,39,40,45,46,47,48,49,50,51,69,72,73,74,85} state3={78} state4={1,2,3,4,5,6} playerskin=initArray2(32,0) wepskin=initArray2(32,0) function getPlayerData(id,d) if (d=="team") then if (player(id,"team")==1) then return "red" end if (player(id,"team")==2) then return "blu" end

问题 I am new to Python and I would like to create what is a 'global static variable', my thread-safe and process-safe queue, between threads/processes created in different modules. I read from the doc that the concept of a global variable is created using a third module, that I will call as cfg, which defines and initializes my global queue. I have a problem sharing the instance of this objects between my modules because I tried to print the repr () function over the shared queue imported from

问题 I am new to Python and I would like to create what is a 'global static variable', my thread-safe and process-safe queue, between threads/processes created in different modules. I read from the doc that the concept of a global variable is created using a third module, that I will call as cfg, which defines and initializes my global queue. I have a problem sharing the instance of this objects between my modules because I tried to print the repr () function over the shared queue imported from