File looks like:
INSERT INTO x VALUES (48394, '9-10-2007', 19);
INSERT INTO x VALUES (99981, '3-5-2008', 45);
I would like to replace each line with:
INSERT INTO x VALUES (48394, STR_TO_DATE('9-10-2007', %d-%m-%y), 19);
INSERT INTO x VALUES (99981, STR_TO_DATE('3-5-2008', %d-%m-%y), 45);
I can't seem to find how to deal with changing string names to replace
:%s/<WHAT GOES HERE>/add in STR_TO_DATE(...)/
If your data is structured exactly like that with no other strings delimited by ' and the contents are always the date you want to convert, searching for simply '.*' will work:
:%s/'.*'/STR_TO_DATE(&, %d-%m-%y)
To be more specific, i.e. if other strings appear on the same line:
:%s/'\d*-\d*-\d*'/STR_TO_DATE(&, %d-%m-%y)
Here's an example of a solution:
:%s/\(INSERT INTO x VALUES (.*,\) '\(.*\)'\(.*\)/\1 STR_TO_DATE('\2', %d-%m-%y)\3/g
Relevant reading
I'm new to Scala and unsure of how to achieve the following
I have the String
val output = "6055039\n3000457596\n3000456748\n180013\n"
I want to extract the numbers separated by \n and store them in an Array
output.split("\n").map(_.toInt)
Or only
output.split("\n")
if you want to keep the numbers in String format. Note that .toInt throws. You might want to wrap it accordingly.
I want to write a function that loads a text file and plots its content with time. I have 20 text files so I want to be able to choose from them.
My current not working code:
TextFile is a generic variable
text123.txt is the actual name of one of the files i want to load
function []= PlotText(TextFile)
text(1,:)=load('text123.txt') ;
t=0:10;
plot(t,text)
end
I appreciate any help!!
use importdata instead of load with appropriate delimiter. I assume you used Tab.
filename = 'num.txt';
delimiterIn = '\t';
text = importdata(filename,delimiterIn)
t=1:10;
plot(t,text);
Firstly, you can also use dlmread if your file contains only numeric data separated by the same symbol (called a delimiter) such as a comma (,), semicolon (;), space ( ), or tab ( ). This would look like:
function []= PlotText(TextFile)
text(1,:)=dlmread('text123.txt');
t=0:10;
plot(t,text)
end
Keep in mind that your code is written in a way that expects the contents of text123.txt to have 11 values in a single row. Also, if you are using multiple files, then I suggest having the file name be another input to the function:
function []= PlotText(TextFile,filename)
text(1,:)=load(filename) ;
t=0:10;
plot(t,text)
end
Trying to use rstrip() at its most basic level, but it does not seem to have any effect at all.
For example:
string1='text&moretext'
string2=string1.rstrip('&')
print(string2)
Desired Result:
text
Actual Result:
text&moretext
Using Python 3, PyScripter
What am I missing?
someString.rstrip(c) removes all occurences of c at the end of the string. Thus, for example
'text&&&&'.rstrip('&') = 'text'
Perhaps you want
'&'.join(string1.split('&')[:-1])
This splits the string on the delimiter "&" into a list of strings, removes the last one, and joins them again, using the delimiter "&". Thus, for example
'&'.join('Hello&World'.split('&')[:-1]) = 'Hello'
'&'.join('Hello&Python&World'.split('&')[:-1]) = 'Hello&Python'
I don't know if Matlab can do this, but I want to store some strings in a 4×3 matrix, each element in the matrix is a string.
test_string_01 test_string_02 test_string_03
test_string_04 test_string_05 test_string_06
test_string_07 test_string_08 test_string_09
test_string_10 test_string_11 test_string_12
Then, I want to write this matrix into a plain text file, either comma or space delimited.
test_string_01,test_string_02,test_string_03
test_string_04,test_string_05,test_string_06
test_string_07,test_string_08,test_string_09
test_string_10,test_string_11,test_string_12
Seems like matrix data type is not capable of storing strings. I looked at cell. I tried to use dlmwrite() or csvwrite(), but both of them only accept matrices. I also tried cell2mat() first, but in that way all letters in the strings are comma seperated, like
t,e,s,t,_,s,t,r,i,n,g,_,0,1,t,e,s,t,_,s,t,r,i,n,g,_,0,2,t,e,s,t,_,s,t,r,i,n,g,_,0,3
So is there any way to achieve this?
It is possible to shorten yuk's solution a bit.
strings = {
'test_string_01','test_string_02','test_string_03'
'test_string_04','test_string_05','test_string_06'
'test_string_07','test_string_08','test_string_09'
'test_string_10','test_string_11','test_string_12'};
fid = fopen('output.txt','w');
fmtString = [repmat('%s\t',1,size(strings,2)-1),'%s\n'];
fprintf(fid,fmtString,strings{:});
fclose(fid);
Cell array is the way to store strings.
I agree it's a pain to save strings into a text file, but you can do it with this code:
strings = {
'test_string_01','test_string_02','test_string_03'
'test_string_04','test_string_05','test_string_06'
'test_string_07','test_string_08','test_string_09'
'test_string_10','test_string_11','test_string_12'};
fid = fopen('output.txt','w');
for row = 1:size(strings,1)
fprintf(fid, repmat('%s\t',1,size(strings,2)-1), strings{row,1:end-1});
fprintf(fid, '%s\n', strings{row,end});
end
fclose(fid);
Substitute \t with , to get csv file.
You can also store cell array of strings into Excel file with XLSWRITE (requires COM interface, so it's on Windows only):
xlswrite('output.xls',strings)
In most cases you can use the delimiter ' ' and get Matlab to save a string into file with dlmwrite.
For example,
output=('my_first_String');
dlmwrite('myfile.txt',output,'delimiter','')
will save a file named myfile.txt containing my_first_String.