call

问题 I have a simple func.php file with concat function: <?php function concat($arg1, $arg2) { return $arg1.$arg2; } ?> I would like to call this function from linux bash shell with two arguments : 1st: "Hello, " 2nd: "World!" and print the output ("Hello, World!") to linux bash shell. Please tell me, how to do it? 回答1: What you want is $argv So for example, your script would be called like this: php /path/to/script.php 'Hello, ' 'World!' Then in your PHP file: <?php $arg1 = $argv[1]; $arg2 =

问题 I'm trying to show call logs from Sim1 and Sim2 separately. I'm getting all call logs, but not able to differentiate it whether it is from Sim1 or Sim2. I have tried below code, val managedCursor = activity?.contentResolver?.query(CallLog.Calls.CONTENT_URI, null, null, null, null) managedCursor?.let { val number = managedCursor.getColumnIndex(CallLog.Calls.NUMBER) val name = managedCursor.getColumnIndex(CallLog.Calls.CACHED_NAME) val type = managedCursor.getColumnIndex(CallLog.Calls.TYPE) val

问题 I'm studying from this site and came upon this question and answer: Write a sum method which will work properly when invoked using either syntax below. console.log(sum(2,3)); // Outputs 5 console.log(sum(2)(3)); // Outputs 5 //answer function sum(x) { if (arguments.length == 2) { return arguments[0] + arguments[1]; } else { return function(y) { return x + y; }; } } I understand the code in the if statement, but not in the else statement because it's simply returning a function. That function

问题 def start(B): wordlist = [] for w in B: content = w words = content.lower().split() for each_word in words: wordlist.append(each_word) print(each_word) return(wordlist) When I call list 'wordlist' it returns that there isn't anything inside the list. How do I get the list to be callable outside of the function since it works inside the function. EDIT: Thank you I have updated the code to reflect the mistake I was making using a print tag instead of a return tag. 回答1: def start(B): wordlist =

问题 A function produces a result, can be used as argument of another function parameter. So, is a function call like: f(1,2,3) be considered as an "expression"? Thanks. 回答1: The C++ standard (N3376, §5.1) specifies an expression as: An expression is a sequence of operators and operands that specifies a computation. An expression can result in a value and can cause side effects. Further in the same section (§5.2.2): A function call is a postfix expression followed by parentheses containing a

问题 A function produces a result, can be used as argument of another function parameter. So, is a function call like: f(1,2,3) be considered as an "expression"? Thanks. 回答1: The C++ standard (N3376, §5.1) specifies an expression as: An expression is a sequence of operators and operands that specifies a computation. An expression can result in a value and can cause side effects. Further in the same section (§5.2.2): A function call is a postfix expression followed by parentheses containing a

问题 I have 4 batch files, suppose a.bat, b.bat, c.bat and d.bat. Now these batch files are called in such a manner that a.bat calls b.bat, b.bat calls c.call and so on. If I get any error in any batch file, I want to exit from the entire program by saying an error occurred, and mention which batch file had a problem. My question is , how can I do this? Here I used exit /b but it only gets out from the current batch file and moves back into batch file from whence it was called: a.bat @echo. off

问题 I would like to call an object method dynamically. The variable "MethodWanted" contains the method I want to execute, the variable "ObjectToApply" contains the object. My code so far is: MethodWanted=".children()" print eval(str(ObjectToApply)+MethodWanted) But I get the following error: exception executing script File "<string>", line 1 <pos 164243664 childIndex: 6 lvl: 5>.children() ^ SyntaxError: invalid syntax I also tried without str() wrapping the object, but then I get a "cant use +

问题 I would like to call an object method dynamically. The variable "MethodWanted" contains the method I want to execute, the variable "ObjectToApply" contains the object. My code so far is: MethodWanted=".children()" print eval(str(ObjectToApply)+MethodWanted) But I get the following error: exception executing script File "<string>", line 1 <pos 164243664 childIndex: 6 lvl: 5>.children() ^ SyntaxError: invalid syntax I also tried without str() wrapping the object, but then I get a "cant use +

问题 I would like to call an object method dynamically. The variable "MethodWanted" contains the method I want to execute, the variable "ObjectToApply" contains the object. My code so far is: MethodWanted=".children()" print eval(str(ObjectToApply)+MethodWanted) But I get the following error: exception executing script File "<string>", line 1 <pos 164243664 childIndex: 6 lvl: 5>.children() ^ SyntaxError: invalid syntax I also tried without str() wrapping the object, but then I get a "cant use +