Recent questions tagged function

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function - how to avoid sql injection in codeigniter

In CodeIgniter, how can I avoid sql injection? Is there any method to set in config file to avoid sql ... using CodeIgniter's bulit-in functions See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - "Identifier Expected" or "Invalid Prototype" when implementing a scripted constant in Inno Setup

So given this function, I get the error "Identifier Expected" on the GetRoot := ROOTPage.Values ... recursesubdirs; Components: DefinedComponent See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Python - how does passing values work?

I have a question about function calls in Python. Say I want to write a function called superLongFunc(expr). The ... a while. Thanks in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - C++: Argument Passing "passed by reference"

I understand as with any other variable, the type of a parameter determines the interaction between the parameter ... , could someone explain? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Forced naming of parameters in Python

In Python you may have a function definition: def info(object, spacing=10, collapse=1) which could be ... even possible would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - R: x 'probs' outside [0,1]

I am using the R programming language. I am trying to follow the instructions from the "optimization" package in R (https ... 5,0.6,0.7)) Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Implement generic swap macro in C

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Swift optional escaping closure parameter

Given: typealias Action = () -> () var action: Action = { } func doStuff(stuff: String, completion: ... closure is escaping the scope of the function. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Parameter Passing in C - Pointers, Addresses, Aliases

Could someone please explain the difference between parameter passing in C please? According to professor notes there ... , and your work would be commended. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Returning a pointer of a local variable C++

I need to create a function that returns a pointer to an int. Like so: int * count() { int myInt = 5 ... it inside the function. Thanks in advance for any help! Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Difference between returns and printing in python?

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - JavaScript curry: what are the practical applications?

I don't think I've grokked currying yet. I understand what it does, and how to do it. I just ... -level function to create simple, concise helper methods. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - How to Open a file through python

I am very new to programming and the python language. I know how to open a file in python, but the question ... line in f: lines.append(line) print(contents) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Round up to nearest multiple of five in PHP

I want a php function which returns 55 when calling it with 52. I've tried the round() function: echo round(94, -1); // 90 It returns 90 but I want 95. Thanks. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - What is the difference between a 'closure' and a 'lambda'?

Could someone explain? I understand the basic concepts behind them but I often see them used interchangeably and I ... do they differ from a regular function? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - C++ overload resolution

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Should I use an exception specifier in C++?

In C++, you can specify that a function may or may not throw an exception by using an exception specifier. ... and provide some reasons to justify your answer. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - "Parameter" vs "Argument"

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Procedure with assumed-shape dummy argument must have an explicit interface

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - In php, is 0 treated as empty?

Code will explain more: $var = 0; if (!empty($var)){ echo "Its not empty"; } else { echo "Its empty"; } ... and have value inside. Why it returns "Its empty"?? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Extending an Object in Javascript

I am currently transforming from Java to Javascript, and it's a bit hard for me to figure out how to ... show me another alternative that extends an object. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - converting multiple columns from character to numeric format in r

What is the most efficient way to convert multiple columns in a data frame from character to numeric format? I have a ... DF$i <- as.numeric(DF$i) } Thank you Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Purpose of a constructor in Java?

What is the purpose of a constructor? I've been learning Java in school and it seems to me like a ... we've done thus far has been extremely rudimentary. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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821 views

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function - Why does using `arg=None` fix Python's mutable default argument issue?

I'm at the point in learning Python where I'm dealing with the Mutable Default Argument problem. # BAD: ... a_list get wiped clean every time good_append runs? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Computing the cross product of two vectors in Fortran 90

I would like to compute the cross product of two vectors in Fortran 90. For example, in words, the cross product ... . Can you please help me see my error? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Difference between . and : in Lua

I am confused about the difference between function calls via . and via : > x = {foo = function(a,b) return a end, bar ... x:bar(3,4) 3 What is the : doing ? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Is passing pointer argument, pass by value in C++?

Is passing pointer argument, pass by value in C++? Since i see that any change to the pointer as such is ... modify the pointer value as such within a function? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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function - Ignore python multiple return value

Say I have a Python function that returns multiple values in a tuple: def func(): return 1, 2 Is there a nice way ... a better way than this: x, temp = func() Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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