String interpolation is the replacement of defined character sequences in a string by given values. This representation may be considered more intuitive for formatting and defining content than the composition of multiple strings and values using concatenation operators. String interpolation is typically implemented as a language feature in many programming languages including PHP, Haxe, Perl, Ruby, Python, C# (as of 6.0) and others.
Questions tagged [string-interpolation]
1093 questions
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votes
1 answer
string interpolation with sqlite3 and Node
Somewhat new to this, but I'm having an issue inserting a variable into my sqlite3 query. I get the error { [Error: SQLITE_ERROR: no such column: shmee] errno: 1, code: 'SQLITE_ERROR' } where shmee in this case is req.body.username
Not sure what I'm…
prw416
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votes
1 answer
Why can I access PHP objects inside a string?
This is some PHP code for rendering an HTML anchor element. Why does this:
$archives .= " [List^]";
work…
Axonn
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votes
2 answers
Reading by scanf line by line
I need to use scanf to read a text file input into stdin. I want to read the text file line by line and then assign each values in the line to their values.
This is the text file
38
5 35 3099 48 222 16 4 1 Ronaldo
2 33 2572 22 97 7 6 0 Neymar
1 38…
jingo
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votes
2 answers
Ruby string interpolation
How do I insert
#{stock_sym}
into
stock_price = dom.xpath('//*[@id="yfs_l84_aapl"]').first.content
replacing aapl?
jmanikan
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votes
2 answers
Parse backslash escape with str_replace
Say I have a function templateMap which, for each subarray of $array, replaces every occurrence of @n (for some n) in the given $string with values from that subarray, returning the new array of subarrays. Also say that I want to allow the user to…
Chris Middleton
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votes
1 answer
Generate All Possible Matches of a Regular Expression
How can I derive all possible matches of a regular expression
For example:
((a,b,c)o(m,v)p,b)
The strings generated from above expression would be:
aomp
bomp
comp
aovp
bovp
covp
b
Nilutpal Borgohain
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votes
2 answers
Run shell command with many arguments
I have a very long command with many arguments, and somehow it's not working the way it should work. The following knife command will connect to remote vCenter and create a VM called node1. How do I wrap the following command and run inside ruby? Am…
Satish
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votes
2 answers
python string interpolation syntax error
I am playing with the string interpolation and I keep getting the following and don't understand why I keep getting invalid syntax
>>> import time
>>> today = time.strftime("%A")
>>> print "Today is %s." % today
File…
user2757400
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votes
2 answers
Call variable inside array element
Is it possible to read array element using variable?
I'd like to set $vid in one place depending on the configuration, and then use multiple times i.e. $detailrow["customfields1"];
I want to do this:
$vid = 1;
$detailrow["customfields$vid"];
But no…
jakubplus
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votes
1 answer
Interpolate json value from ajax call in jquery
I have an ajax call in jQuery which returns a set of values: p1, p2 ... pn. These contain strings of a path and filename for displaying images. ie the img src value.
I want to loop through these n values ( i = 1 to n ) something like [pseudo] :…
Upland
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votes
2 answers
PHP: Interpolating a PHP variable in a string block
So, in Perl and PHP, you can produce a block of text using a number of the "<" symbols:
Perl:
return <Perl interpolates this properly
TEXT
PHP:
return <<PHP does not interpolate…
Thumper
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votes
1 answer
clear Interpolation-only expressions are deprecated in Terraform warning question
We have been doing,
node_selector = var.node_group != null ? { “${var.node_group}” = true } : null
and in tfvars we will have, node_selector = “NODEGROUP2” And it works correctly.
Tflint is throwing a warning on it as below,
Warning:…
Simon
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votes
1 answer
Please tell me how to print the alphabet in upper case when printing hexadecimal using Convert.ToString
output.WriteLine($"{Convert.ToString(num1, 16).PadLeft(width)}");
The above code outputs the integer converted to hexadecimal. The 'width' variable is a variable that takes a value from the keyboard to determine how to align the numbers. When…
Lee Seonghyeon
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votes
1 answer
Why is my string interpolation not working
I used backticks yet the string interpolation is not working, what's even weirder is that it is sometimes working in other parts of the code.
It's not working here
let files = getFiles(`./commands/${category}`, ".js")
But it is working here
if…
Ancient
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votes
1 answer
What does String.format() do inside the return statement of my code?
Please could anyone explain what's going on with the return method(String.format)?
Also, I would like to know how does the code inside the last return statement works?
import java.util.Map;
import java.util.HashMap;
public class RockPaperScissors…
Hubert
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