narray | repository contains OLD version of NArray | Genomics library
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kandi X-RAY | narray Summary
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QUESTION
#include
#include
#include
int Init_Arr(int N,int X,int *arr);
void Add_elem(int N,int *arr);
void Del_elem(int N,int *arr);
void Reinit_arr(int N,int *arr);
int main(){
int N,X,*arr;
printf("How big array do you want?:");
scanf("%d",&N);
arr=(int *)malloc(sizeof(N));
printf("\nHow much elements do you want in your array?:");
scanf("%d",&X);
Init_Arr(N,X,arr);
Add_elem(N,arr);
Del_elem(N,arr);
Reinit_arr(N,arr);
return 0;
}
int Init_Arr(int N,int X,int *arr){
for (int i=0;i
...ANSWER
Answered 2021-May-17 at 18:25The lines
QUESTION
I wanted to write a dynamic array for trivial type (then I can use memcpy or sth to optimize), but when I compare its efficiency to std::vector
, I found its push_back
function is twice as efficient as astd::vector
.
That's so strange, I read source code of MSVC STL to find why, but in vain.
my code:
...ANSWER
Answered 2021-May-11 at 10:35Your version is only valid for trivially copyable types.
Because reallocation may involve bytewise copying (regardless of whether it's to expand or to contract), only the objects of TriviallyCopyable types are safe to access in the preserved part of the memory block after a call to
realloc
.
The ordinary std::vector
has a very lax requirement in comparions, merely Destructible in general, and one of CopyInsertable or MoveInsertable for push_back
.
QUESTION
I'm a student at tech unuversity. I have my hometask on JS. Here it is: given a char array. By pressing the "Result" button, find the first comma in the array and the total number of these characters, if it is in the array, if not, display the corresponding message. I made my code, but the teacher said that it`s wrong, because message of number of comma must displayed one time, so as message that there is no comma. Please, help me.
...ANSWER
Answered 2021-Apr-29 at 11:01THE PROBLEM is in the var total = 0 ;
Set it as var total;
QUESTION
I just want to send an email to test the connection via Firebase Functions and AWS Simple Email Service (SES) from a verified domain and verified email addresses (still in sandbox). Therefore I installed node-ses and created the following code. I use vuejs for the webapp and nodejs.
...ANSWER
Answered 2021-Apr-21 at 09:12I found a solution. I still do not know how it works with node-ses
but I know how it works with nodemailer
.
- Install nodemailer (
npm i nodemailer
) - Install nodemailer-ses-transport
- Change the region to one that suits your settings
- Input the following in your
index.js
of Firebase Functions (put your AWS credentials)
--- SOURCE CODE BELOW ---
QUESTION
Beginner in the whole PLC stuff, so corrections are welcome.
I am trying to tidy up my project and current situation is thus: I receive 16 byte arrays from modbus. These act as buttons, lights, conveyors what have you in Factory IO.
...ANSWER
Answered 2021-Apr-12 at 14:09You can try to use a UNION. It is basically an "overlay" variable you can place over another variable.
QUESTION
Scroll for more details
My code :
...ANSWER
Answered 2021-Mar-30 at 13:58This:
QUESTION
I ended up on a mission to document/solve zparseopts this afternoon. I think I found a bug with the -K option - or as I call it -KillYourself.
I think -K is not handling a flag option correctly. The output skews previously existing key/value pairs one-half pair to the left as shown below.
Can a BASH / ZSH guru make sure that I am doing this correctly?
Expected Behavior with -K and additional options and flags:
...ANSWER
Answered 2021-Apr-03 at 01:11The issue is the printout of the values in the associative array. Try replacing the paargs
for loop with this:
QUESTION
I'm using Programming Principles and Practice Using C++ as my guide and reference to learn programming and c++. In chapter 4.6.4 the book showed this snippet of code.
...ANSWER
Answered 2021-Mar-28 at 15:44The first example is working in C++20, if sort is from the ranges namespace. Is it mentioned in the book/tutorial your are reading?
sort(arr, arr[5]);
in your terms, arr[5] is not "where", it's an array element, i.e. "what". "Where" is the address &arr[5] or &arr[n]. You could use std::begin(arr) and std::end(arr) instead of arr and &arr[n].
How std::sort work is very well explained with examples on std::sort.
QUESTION
I'm trying to create dummy variables for a categorical variable in my pandas
dataframe. When I try this with scikit-learn's OneHotEncoder
, I get an error.
Here's a sample of my database :
...ANSWER
Answered 2021-Feb-24 at 14:57The error message tells you most of how to fix the error: reshape your data. The issue is that it's expecting a numpy
array. Instead, you're giving it a pandas.Series
object—which doesn't support reshape
.
QUESTION
I have de-compiled a Java project using JD-GUI, and was surprised when I saw that all identifiers are using Java reserved keywords such as int do throw extends etc..
Here is a snippet of the project:
...ANSWER
Answered 2021-Feb-24 at 01:00While reserved words may not occur in Java source code, they are permitted in compiled Java code. Some code obfuscation tools can make use of this to make decompiling harder. For instance, ProGuard provides the following option:
-obfuscationdictionary filename
Specifies a text file from which all valid words are used as obfuscated field and method names. By default, short names like 'a', 'b', etc. are used as obfuscated names. With an obfuscation dictionary, you can specify a list of reserved key words, or identifiers with foreign characters, for instance. White space, punctuation characters, duplicate words, and comments after a# sign are ignored. Note that an obfuscation dictionary hardly improves the obfuscation. Decent compilers can automatically replace them, and the effect can fairly simply be undone by obfuscating again with simpler names. The most useful application is specifying strings that are typically already present in class files (such as 'Code'), thus reducing the class file sizes just a little bit more. Only applicable when obfuscating.
So if you feed this a list with Java identifiers (such as this one) you end up with a class file that causes syntax errors if decompiled. Of course, you can simply rename the variables to fix these compilation errors (for instance by using ProGuard yourself before decompiling), so this is only a minor inconvenience.
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