substitution

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how to substitute part of a string in python?

How to replace a set of characters inside another string in Python? Here is what I\'m trying to do: let\'s say I have a string \'abcdefghijkl\' and want to replace the 2-d from the end symbol (k) wit[详细]

2023-01-13 05:46 分类：问答
Perl: Global substition within tag delimited string

My previous post got the tags partially stripped, so here it is again: My goal is to replace all instances of a trailing - to a trailing + within tag brackets. Lets assume the line to be replaced loo[详细]

2023-01-09 23:23 分类：问答
How to use a variable as modifier in a substitution

Is there a way to use a variable as modifier in a substitution? my $search = \'looking\'; my $replace = \'\"find: $1 =\"\';[详细]

2023-01-07 04:17 分类：问答
ListId GUID substitution in CAML in Share Point 2010 (and other subsitutions)

There\'s a new syntax element in SP 2010\'s feature definitions {$ListId:Lists/ListName}. Apparently it should replace it with the GUID o开发者_运维知识库f the list on traget site. This solves a probl[详细]

2023-01-07 00:36 分类：问答
R warning message on recursive expression: If you fail, try, try again

I want to create a function that will retry an expression if it fails.Here\'s my working version: retry <- function(.FUN, max.attempts=3, sleep.seconds=1) {[详细]

2023-01-05 07:27 分类：问答
How many substitutions took place in a Perl s///g?

Small example: perl -e \'$s=\"aaabbcc\";$c=()=$s=~/a/g;print\"$c\\n$s\\n\"\' (m//g) outputs 3 aaabbcc whereas perl -e \'$s=\"aaabbcc\";$c=()=$s=~s/a/x/g;print\"$c\\n$s\\n\"\' (s///g) outputs[详细]

2023-01-04 23:46 分类：问答
select row from table and substitute a field with one from another column if it exists

I\'m trying construct a PostgreSQL query that does the following but so far my efforts have been in vain.[详细]

2023-01-03 01:34 分类：问答
What is wrong with this substitution?

#!/usr/bin/perl use strict; use warnings; my $s = \"sad day Good day May be Bad Day \"; $s =~ s/\\w+ \\w+/_/gm;[详细]

2023-01-01 17:59 分类：问答
Search and replace across multiple lines with conversion to lower case in Vim

Here\'s what I\'d like to do, for each one of many files: search for all occurrences of <a href 开发者_如何学Gothen begin block selection[详细]

2022-12-31 09:59 分类：问答
Maven: properties not being substituted

I\'m using a maven plugin for install4j in my project, located here. That plugin lets you pass variables to install4j using the <compilerVariables> section. Here\'s the relevant section of my po[详细]

2022-12-30 18:28 分类：问答