variable-names Questions
5
So this seems like I should have been wondering about this when I first started programming, but I suppose back then I wasn't as concerned with 'perfect' variable naming.
So I have the variables
...
Zane asked 21/2, 2017 at 5:15
4
Solved
#check if the name is valid
function myfunc()
{
#check "${1}"
#echo "valid/invalid"
}
#these should return valid
myfunc "my_number"
myfunc "my_number1"
#these should return ivalid
myfunc "1my_...
Underlayer asked 8/11, 2012 at 17:16
9
Solved
When you save a variable in an R data file using save, it is saved under whatever name it had in the session that saved it. When I later go to load it from another session, it is loaded with the sa...
Hair asked 7/4, 2011 at 7:4
3
Solved
In this code:
typedef int foo;
struct S
{
foo foo;
};
int main() {}
all versions of clang -std=c++14 accept this code, however all versions of g++ -std=c++14 report:
5 : error: declaration o...
Universe asked 24/12, 2015 at 9:5
4
Solved
I stumble upon some C++ code like this:
int $T$S;
First I thought that it was some sort of PHP code or something wrongly pasted in there, but it compiles and runs nicely (on MSVC 2008).
What kind ...
Buoyage asked 28/10, 2011 at 7:38
1
Solved
I was writing some Perl code in vim and accidentally typed a single quote character in a variable name and noticed that it highlighted it in a different color than normal single quoted strings.
I ...
Evadnee asked 6/4, 2021 at 16:1
6
Solved
With gcc 4.7.2 this compiles just fine for me:
int main()
{
int _ = 1;
return 0;
}
Can I expect this to compile in general? I've read the answers about underscores as prefixes. But what if the...
Elapse asked 5/9, 2013 at 22:28
10
Solved
I am trying to execute this query:
declare @tablename varchar(50)
set @tablename = 'test'
select * from @tablename
This produces the following error:
Msg 1087, Level 16, State 1, Line 5
Must decl...
Meakem asked 15/5, 2010 at 1:7
1
Solved
I wrote some code recently where I unintentionally reused a variable name as a parameter of an action declared within a function that already has a variable of the same name. For example:
var x = ...
Homophonous asked 29/1, 2020 at 17:58
3
Solved
I have a Kotlin class in my application with a lot of attributes, what I want to build is a method that stores the variable name in a dictionary. The dictionary looks like this:
HashMap<String...
Photoflash asked 7/11, 2018 at 11:4
1
Solved
I want to add a new column in a dataframe with values from some other dataframe. My new column name is a variable and I cannot hardcode it.
new_column = "my_new_column_name"
df = df.assign(new_co...
Bona asked 16/9, 2019 at 5:40
10
Solved
I am developing a tool to dump data from variables.
I need to dump the variable name, and also the values.
My solution: Store variable name as a string, and print the "variable name", followed by ...
Scope asked 26/10, 2009 at 4:42
24
Solved
I was working with a new C++ developer a while back when he asked the question: "Why can't variable names start with numbers?"
I couldn't come up with an answer except that some numbers can have t...
Retorsion asked 4/12, 2008 at 21:32
1
Solved
I have learnt from PEP 3131 that non-ASCII identifiers were supported in Python, though it's not considered best practice.
However, I get this strange behaviour, where my 𝜏 identifier (U+1D...
Ortego asked 2/1, 2018 at 14:51
2
Solved
This is somewhat academic, but nevertheless.
Python syntax forbids starting a variable name with a number, but this can be sidestepped like so:
>>> globals()['1a'] = 1
>>> globals...
Stemware asked 31/1, 2017 at 16:21
2
Solved
Thanks ahead of time, to anyone who helps. :)
This may seem a simple answer to those who are experienced, but I have scoured the internet as well as a couple of reference books, and not found a st...
Tense asked 1/3, 2016 at 19:22
2
Solved
I am writing a function in R to extract some air quality modelling data from netCDF files. I have the Package "ncdf" installed.
In order to allow other users or myself to choose what variables to ...
Marcus asked 29/1, 2013 at 15:33
2
Solved
I'm currently trying to remove all errors and warnings I have in my project the Inspection tool from my PHPStorm give to me.
I encounter a snippet PHPStorm says "Unused private method _xxx" while ...
Appendicitis asked 12/9, 2014 at 17:13
2
Solved
I heard that it is possible to use Unicode variable names using the -fextended-identifiers flag in GCC. So I made a test program in C++, but it does not compile.
#include <iostream>
#in...
Lotte asked 26/9, 2015 at 16:2
1
**So, I've worked with Erlang, before, and am pretty comfortable with it. I am just trying to learn Elixir.
I was recently trying to translate a 'lazy caterers' example into elixir and am be...
Brittani asked 12/6, 2015 at 22:26
2
Solved
I have following simple function but its ggplot command does not work. The command works all right when given from command line:
> testfn <- function(gdf, first, second){
library(ggplot2)...
Tolentino asked 30/4, 2014 at 8:7
6
Solved
Let's assume that I want to create 10 variables which would look like this:
x1 = 1;
x2 = 2;
x3 = 3;
x4 = 4;
.
.
xi = i;
This is a simplified version of what I'm intending to do. Basically I just...
Handcart asked 19/4, 2013 at 7:24
3
Solved
Related: Why can't variable names start with numbers?
Is there a technical reason why spaces aren't allowed in variable names or is it down to convention?
For example, what's stopping u...
Oedipus asked 25/12, 2013 at 5:48
1
Solved
I have a simple question about component IDs and dialog (or other components) widget variable name.
Is there a problem of using the component ID as widget variable name of the same component?
E.g...
Liber asked 30/9, 2013 at 13:41
3
Solved
I tried running the sample code which appears on the documentation page for the System.Reflection.Emit.LocalBuilder class but it appears that the calls to LocalBuilder.SetLocalSymInfo(string, int, ...
Herriot asked 12/2, 2012 at 22:56
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