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gcc error: a function-definition is not allowed here before ‘{’ token?

The standard C doesn't allow to put function definition inside function definition (nesting function definition). In this case, no local variables of the function main is referenced from the function...

Tags: c#, function, gcc

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Javascript - I created a function that creates objects, I want the objects created from that function to have a unique key. How can I do that?

The best way is to use closure const pAequorFactory = () => { let specimenCount = 0; // To keep track of the number of specimens created return (dna) => { specimenCount++; // Increment the sp...

Tags: Javascript, function, Object

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Javascript - Add an event listener to the first button that changes the text within the <h1> to EITHER uppercase or all lowercase?

So first off, you'll want a variable, isUpperCase, that will remember if the text is uppercase or lowercase. This variable will change with each click of the button so it cannot be declared as a const...

Tags: Javascript, function, button

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write xlsx files from a list of dataframes in R?

I rewrite the code as follows library(tidyverse) library(openxlsx) list_data% pull(District) %>% lapply(function(x) { sub_list % mutate(subsheet = y) %>% relocate(subsheet) %>...

Tags: r, dataframe, list

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Test when the argument of function is a column name?

library(tidyverse) set.seed(12) data_table % mutate(mean_a = mean(a)) %>% ungroup() %>% distinct(mean_a, {{grouped_var}}) } # Define test data and arguments data % # Unquote the argu...

Tags: function, dplyr, arguments

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Python - Comparing two data frames with condition and removing all that not qualified?

If I understand you correctly, you can use pd.Series.isin for the task (for creating the boolean mask): print( df[ df["policy number"].isin( df_2.loc[df_2["policy status"] == "...

Tags: python, pandas, dataframe

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Javascript - Using Constant while calling a function in a conditional?

You should have to place the condition inside the function getting the ordinates. Since const and let are block scoped, you cannot use outside the function. if (navigator.geolocation) { navigator.ge...

Tags: Javascript, function, conditional-statements

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How can I ensure that my code properly handles the asynchronous nature of the Geolocation API callback in JavaScript?

Tags: Javascript, function, conditional-statements

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Python - Best way to use re.sub with a different behavior when first called?

With an iterator, inspired by Andrej: import re text = "hello123 world456" text = re.sub( r"\d+", lambda _, i=iter([":)"]): next(i, ""), text ) print(text) Attempt This Online! Or using...

Tags: python, function, global-variables

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