concatenation Questions
2
I have the following values, each of which is a scalar of type double: a1, a2, a3, a4, a5.
I tried to concatenate them using Numpy, as follows:
f = np.concatenate((a1,a2,a3,a4,a5))
I however get t...
Diversity asked 27/1, 2018 at 0:15
5
I tried to run this code, but it showed an error:
def shoot(aliens):
s=[0]*1000
s[0]=0
s[1]=1
num=len(aliens)
b=[[0 for m in range(1000)] for n in range(1000)]
for j in xrange(2,num):
for i ...
Vorous asked 19/7, 2013 at 20:46
3
Solved
I have three dataframes: timestamp (with timestamps), dataSun (with timestamps of sunrise and sunset), dataData (with different climate data). Dataframe timestamp has datatype "int64".
timestamp.h...
Millford asked 20/4, 2018 at 11:20
4
Solved
I'm trying to concatenate Pandas DataFrame columns with NaN values.
In [96]:df = pd.DataFrame({'col1' : ["1","1","2","2","3","3"],
'col2' : ["p1","p2","p1",np.nan,"p2",np.nan], 'col3' : ["A","B",...
Cozen asked 3/5, 2014 at 13:9
5
Solved
I wanted to know if there was a way to verify if a value in one df that was being Concatenated with another existed in both dfs or the other df as well prior to stacking them on top of each other??...
Permafrost asked 28/2, 2019 at 7:11
9
Solved
I know that the following:
String s = null;
System.out.println("s: " + s);
will output: s: null.
How do I make it output just s: ?
In my case this is important as I have to concatenate Strin...
Schaumberger asked 5/7, 2014 at 5:58
3
Solved
Suppose I have two dataframes:
import pandas as pd
test1 = pd.DataFrame([1,2,3,4,5])
test2 = pd.DataFrame([4,2,1,3,7])
I tried test1.append(test2) but it is the equivalent of R's rbind.
How can ...
Volteface asked 18/2, 2015 at 23:7
5
I am currently concatenating a first and a last name like this (using PostgreSQL):
concat(customers.firstname, ' ', customers.lastname)
The problem I am having here is that I have customers that...
Trilogy asked 7/7, 2016 at 17:45
8
Solved
I currently have a SQL query that returns a number of fields. I need one f the fields to be effectively a sub query sub that.
The Problem in detail:
If I have a table X with two columns, Module...
Subreption asked 27/8, 2009 at 8:57
31
Solved
In PHP, strings are concatenated together as follows:
$foo = "Hello";
$foo .= " World";
Here, $foo becomes "Hello World".
How is this accomplished in Bash?
Encumbrance asked 15/11, 2010 at 5:38
8
Solved
I would like to know how to concatenate a string to the end of all elements in a list.
For example:
List1 = [ 1 , 2 , 3 ]
string = "a"
output = ['1a' , '2a' , '3a']
Chalkboard asked 13/1, 2018 at 18:29
18
Solved
I am consuming some JSON from two different sources, I end up with two JSONObjects and I'd like to combine them into one.
Data:
"Object1": {
"Stringkey":"StringVal",
"ArrayKey": [Data0, Data1]...
Cuff asked 8/3, 2010 at 17:12
6
Solved
I would like to append a byte array to an already existing file (C:\test.exe). Assume the following byte array:
byte[] appendMe = new byte[ 1000 ] ;
File.AppendAllBytes(@"C:\test.exe", appendMe);...
Aerography asked 28/7, 2011 at 16:29
5
I'm working with some rather large sparse matrices (from 5000x5000 to 20000x20000) and need to find an efficient way to concatenate matrices in a flexible way in order to construct a stochastic mat...
Banas asked 27/7, 2011 at 13:20
7
Solved
I have two instances of IEnumerable<T> (with the same T). I want a new instance of IEnumerable<T> which is the concatenation of both.
Is there a built-in method in .NET to do that or do...
Delois asked 4/1, 2013 at 21:7
18
Solved
How do I concatenate two integer numbers in Python? For example, given 10 and 20, I'd like a returned value of 1020.
Feigin asked 11/10, 2012 at 11:32
23
Solved
I here have 200 separate CSV files named from SH (1) to SH (200). I want to merge them into a single CSV file. How can I do it?
Bunker asked 25/3, 2010 at 0:24
4
Solved
I am curious why a simple concatenation of two dataframes in pandas:
initId.shape # (66441, 1)
initId.isnull().sum() # 0
ypred.shape # (66441, 1)
ypred.isnull().sum() # 0
of the same shape and bo...
Procedure asked 31/10, 2016 at 9:55
15
ORIGINAL POST
Given that there is no built in function in Lua, I am in search of a function that allows me to append tables together. I have googled quite a bit and have tried every solutions I st...
Exorable asked 11/9, 2009 at 13:27
12
How to concat all column values from differenct rows returned from a sql query into one value? This is an example:
a query returns:
FOO
------
RES1
RES2
RES3
now I want to have a result like...
Stakhanovism asked 9/6, 2009 at 14:45
9
Solved
Using GDB, I find I get a segmentation fault when I attempt this operation:
strcat(string,&currentChar);
Given that string is initialized as
char * string = "";
and currentChar is
char c...
Goatsbeard asked 29/1, 2011 at 2:48
7
Solved
I want to accomplish the following
answer = True
myvar = "the answer is " + answer
and have myvar's value be "the answer is True". I'm pretty sure you can do this in Java.
Godsey asked 9/5, 2012 at 4:21
9
Solved
I am trying to concatenate two video files using ffmpeg, and I am receiving an error.
To eliminate compatibility issues between the two videos, I have been concatenating the same video with itself,...
Flanker asked 20/6, 2017 at 1:10
15
Solved
I am setting text using setText() by following way.
prodNameView.setText("" + name);
prodOriginalPriceView.setText("" + String.format(getString(R.string.string_product_rate_with_ruppe_sign), "" +...
Scroop asked 16/10, 2015 at 7:32
14
Solved
I was wondering if there was an easy way to concatenate two lists in dart to create a brand new list object. I couldn't find anything and something like this:
My list:
list1 = [1, 2, 3]
list2 = [4,...
Incinerator asked 17/2, 2014 at 10:21
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