The action of retrieving data from a string
String parsing is the action of extracting or modifying data pieces from a string. For example, one might parse a string to remove all quotation marks or to find all items inside quotation marks.
Questions tagged [string-parsing]
970 questions
2
votes
1 answer
Javascript - value exists, then disappears, then appears again?
This is driving me nuts. I can't work it out stepping through with Firebug either. Can someone please explain what is going on here?
Basically I have an incoming text file where each line contains a pipe-delimited record. I'm splitting these into an…
nathanchere
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2 answers
What is the fastest way to remove all characters in a line up until a pattern match in c++?
I have very large files that need to be read into memory. These files must be in a human readable format, and so they are polluted with tab indenting until normal characters appear... For example the following text is preceded with 3 spaces (which…
Rick
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2 answers
Finding lists of elements within a string using Pyparsing
I'm trying to solve the following problem using Pyparsing:
I want to search a string for occurrences of three types of elements:
lowercase words
lowercase words following the literal string "OBJ"
lists containing one of these elements, separated…
drkncls
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5 answers
line split array on console?
lets take for example i have a string declared:
string master = "1.2.3.4";
which is in the form of:
major.minor.project.build
how do i get a string "major","minor","project" and "build" assigned separately from the string "master"?
I know we have…
jeremychan
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My job quote calculator is returning "X is not a function"
This is a corporate massage job quote calculator.
From the user, we collect:
Start time
End time
Number of clients needing a massage
We then use those variables in conjunction with our business rules of time needed per person and hourly rate for a…
kobyrthr
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- 4
2
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0 answers
Python: how to parse a str to a char?
Python read a str '\\x0f' which is 4 chars('\\', 'x', '0' and 'f') but indeed I want to express it as one char which is '\x0f', is any way convert str '\\x0f' to char '\x0f'? Similarly, like converting '\\b' to '\b'.
stackKKK
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Swift Converting Format in Text File (String Parsing)
I was wondering what is the best way to take a text file containing lines in this format:
Last_name:First_name:Number_of_cats:Number_of_dogs:Number_of_fish:Number_of_other_pets
and produce a text file containing lines in this format:
First_name…
M. Azam
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2
votes
1 answer
Check to see if numbers in a column are sequential via command line
In a text file, I have a sequence of numbers in a column preceded by a short string. It is the 5th column in the example file here under "NAME":
SESSION NAME: session
SAMPLE RATE: 48000.000000
BIT DEPTH: 16-bit
SESSION START TIMECODE:…
bigschatz
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What is a performant way to split long lines when only a subset of fields is desired
The details of my query follow:
I have a very large TSV (Tab Sep. Value) file (where large > 30 GB).
I want to extract certain lines from this file that don't end with an empty last field. Since this is a TSV file, those lines that don't end with…
Michael Goldshteyn
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5 answers
How to fetch column names from 'MySQL Create Table' Query string?
I want to write a script in PHP which get 'MySQL Create Table' Query as string and store column names and their data types in array.
For example:
input string:
CREATE TABLE `test` (
`col1` INT( 10 ) NOT NULL ,
`col2` VARCHAR( 50 ) NOT NULL…
Awan
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votes
2 answers
How can I create a nested dictionary object from tree-like file-directory text-file?
I have a tree-structure separated by tabs and lines like this:
a
\t1
\t2
\t3
\t\tb
\t\tc
\t4
\t5
And I am looking to turn this into:
{
'name': 'a',
'children': [
{'name': '1'},
{'name': '2'},
{
'name': '3'
'children': [
{'name':…
akad3b
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1 answer
DOM parsing, structured document traversal under the hood
As a developer, and I'm certain I'm far from alone here, I'm always curious to understand what's "under the hood". DOM parsers are one of the list-toppers of this curiosity for me. We all know the famous post. I have even hacked together a bit of an…
Dan Lugg
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How do you get the first part of a URI in Angular 5?
I have a button on my navbar. When clicked, I want a different behavior depending on which URI the user is currently on.
Let's say that I have this URI localhost:8080/entity/{entityId}
How can I get entity, the first part of the URI, as a string in…
Wissam Goghrod
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2 answers
String parsing in JavaScript / jQuery
I have a string like url params. I want to get insurance value if insurance param comes only one time in string.
For example:
1. Following string should produce result:…
Awan
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2
votes
1 answer
How to handle substring with dynamic length in PowerShell
I have a list of domain as follows:
facebook.com
youtube.com/video
google.com/
github.com/something/somewhere
microsoft.com/default.aspx
Now I want to use PowerShell to substring with expected result as follows, in order to create a cleaned…
EagleDev
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