Refers to anything whose length can vary
Refers to anything whose length can vary
Questions tagged [variable-length]
290 questions
2
votes
6 answers
a C program crashes, using a double-type variable length array
I am reading C Primer Plus these days and here is the code I wrote for the programming practice No.4 in Chapter 10, finding the index of the largest number in a double-typed array. I used variable length array in order to manually specify the array…
endless
- 97
- 1
- 4
2
votes
1 answer
One way hash with variable length alphanumeric output
I need to one way hash alphanumeric + special chars(ascii) strings of variable length (10-20 chars).
The output should be of variable length but max 25 chars long, alphanumeric and case insensitive.
Also I do not want to produce collisions so I need…
Chris L.
- 23
- 4
2
votes
2 answers
Method that takes in an undefined number of arrays
A while back I was playing with methods using variable-length argument lists (java) that get defined as below
public static int[] makeArray (int... a) {
return a;
}
this is a silly program but what it will do is take in an undefined amount of…
justingiffard
- 53
- 6
1
vote
1 answer
ANTLR: parsing header followed by binary data chunk with unknown length
There in a data stream are two packets. Each has the header followed by some binary data with unknown length, until another header is found, or EOF is reached.
Here is the data: HDR12HDR345
HDR is the header marker
12 and 345 are the binary…
vita
- 21
- 3
1
vote
1 answer
Checking the significance of the difference between two groups of different length
I need to check if the difference between land surface temperature in the past and present within the LULC is statistically significant. LULC units changed over time and the length of the temperature data changed as well because the class grew.
I…
BansheeEve
- 13
- 2
1
vote
0 answers
Decode LEB128 getting wrong results
I'm trying to implement LEB128 to write a custom Minecraft Server implemention. I'm doing so by following Wikipedia article about LEB128 and port example Javascript code given to C.
https://en.wikipedia.org/wiki/LEB128
#include
#include…
user21053170
- 17
- 3
1
vote
2 answers
Why do I get "TypeError: Cannot read property 'length' of undefined" when using length method
I wrote a function that returns the longest word
const longestWord = (phrase) => {
const arr = phrase.split(" ");
let longest;
for (let i = 0; i < arr.length; i++) {
if (arr[i].length < arr[i+1].length){
longest = arr[i+1]
…
Normye
- 45
- 4
1
vote
1 answer
Laravel rule to checking length is not equal to N
We have defined some rules in laravel but we need rule in which length of string should not be 5.
code is given below.
$rules = array(
'id' => 'required|numeric|digits_between:7,8'
);
current rule is length would be in between 7 and 8 but i need to…
Nirav Trivedi
- 13
- 7
1
vote
1 answer
Creating Table in R Using List of Values from Another Dataset with Different Length
I have a dataset of 50,000+ observations and I'm trying to create a table of my two variables of interest, chemical and lab_code. The code below outputs a working table that can be used to create a basic heatmap, but like the the main dataset, it…
Irene
- 47
- 8
1
vote
1 answer
how to calculate the size of the string with /0 inside which a pointer points to
let say I have a char pointer like this:
unsigned char* value="Hello\0Hello";
how can i calculate the size of value, as strlen only calculate the size of string until the '/0' so I can not use strlen, and also sizeof returns the length of the…
Lia
- 33
- 6
1
vote
1 answer
is it safe to make a VLA slightly longer than argv[1]?
Example code, treats argv[1] as a file path, replacing its extension with .png or appending it if none is found:
#include
#include
int main(int argc, char **argv) {
if (argc != 2)
return 1;
char *lastdot =…
landfill baby
- 39
- 7
1
vote
1 answer
How to get the length of a formula in R?
I am trying to get the length of the following formula:
myformula <- ~ (1 | Variable1) + (1|Sex) + Age + Cells + Glucose
But for some reason, R doesn't recognize the real number of elements (which is 5)
str(myformula)
Class 'formula' language ~(1…
emr2
- 1,436
- 7
- 23
1
vote
0 answers
Excel: Extracting numbers from a string with variable length
I have a column with data that looks like this:
Day
D003
D004
D008
D010
D012
D028
And in the next column, I need to extract just the 3, 4, 10, 12, etc. with NO leading 0's. I tried the following:
=IF(D8="D003…
RaleighWalker
- 17
- 5
1
vote
1 answer
Trying to count number of elements but it returns zero
The elements:
The code: countMaterials(){ let countItems = 0; cy.get('#center_column').find("div").then((items) => { countItems = items.length; }); return countItems; } I'm…
class="product-image-container"
The code: countMaterials(){ let countItems = 0; cy.get('#center_column').find("div").then((items) => { countItems = items.length; }); return countItems; } I'm…
yuv
- 139
- 1
- 1
- 5
1
vote
3 answers
Getting error when trying to calculate the length of the array after sort in python
I am totally confused on the below code execution,
a= [10,30,4]
a = a.sort()
r = len(a) - 1
print (r)
When the above code is executed I get
r = len(a) - 1
TypeError: object of type 'NoneType' has no len()
However the code runs fine if I find the…
Selva
- 43
- 3