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How to escape dollar and curly braces for replacement operators in Powershell


By : Hadi Alamed
Date : October 14 2020, 02:24 PM
will help you -replace is an operator that replaces a regular expression.-creplace just makes this regular expression case sensitive. The problem you are running into is the regular expression itself, as certain characters have a special role in regex.
What you want to do, is to escape such characters:
code :
 $template -replace [regex]::escape($needle), $value


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Escape 2 Curly Braces / Angular JS braces


By : Nicky Romeijn
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further The braces are replaced in the browser by a JavaScript framework like AngularJS. You have to tell the framework to not replace them.
In AngularJS you would use the ng-non-bindable directive:
code :
<%= f.text_area @my_string, class: "ng-non-bindable" %>

How do I escape curly braces {...} in powershell?


By : user2828196
Date : March 29 2020, 07:55 AM
it helps some times I need to generate multiple lines of xml tag with a GUID in them: , To escape curly braces, simply double them:
code :
'{0}, {{1}}, {{{2}}}' -f 'zero', 'one', 'two'
# outputs:
# zero, {1}, {two} 
# i.e. 
# - {0} is replaced by zero because of normal substitution rules 
# - {{1}} is not replaced, as we've escaped/doubled the brackets
# - {2} is replaced by two, but the doubled brackets surrounding {2} 
#   are escaped so are included in the output resulting in {two}
Write-Host ('<xmltag_{0} value="{{{1}}}"/>' -f $i,$guid)
$i=10
while($i -lt 21)
{
    $guid = ([guid]::NewGuid()).ToString().ToUpper();
    Write-Host "<xmltag_$i value=`"$guid`"/>"
    $i++
}
Write-Host ('<xmltag_{0} value="{1:B}"/>' -f $i, $guid)

Scala regex - How to match inside of curly braces but escape curly braces itself


By : Chriz
Date : March 29 2020, 07:55 AM
this will help It is very much doable, though you might want to make sure you really need to do it using regex, as the result isn't quite pretty, and pretty much unmaintanable:
code :
val regex =  """[^\{\[]*[\{\[](((?<=\{)[^}]*)|((?<=\[)[^\]]*))[\}\]]""".r
scala> val configByLines = """text {text10}
     | text {text1, text9}
     | anotherText [
     | {text2, text5}
     | {text3, text6}
     | {test4, text8}
     | ]"""
configByLines: String =
text {text10}
text {text1, text9}
anotherText [
{text2, text5}
{text3, text6}
{test4, text8}
]

scala> val regex =  """[^\{\[]*[\{\[](((?<=\{)[^}]*)|((?<=\[)[^\]]*))[\}\]]""".r
regex: scala.util.matching.Regex = [^\{\[]*[\{\[](((?<=\{)[^}]*)|((?<=\[)[^\]]*))[\}\]]

scala> val line = regex findAllIn configByLines.replace("\n", " ")
line: scala.util.matching.Regex.MatchIterator = non-empty iterator

scala> line.matchData foreach {
     |   m => println("output: "+m.group(1))
     | }
output: text10
output: text1, text9
output:  {text2, text5} {text3, text6} {test4, text8}

What does ${} (dollar sign and curly braces) mean in a string in Javascript?


By : javier Aladid
Date : March 29 2020, 07:55 AM
should help you out You're talking about template literals.
They allow for both multiline strings and string interpolation.
code :
console.log(`foo
bar`);
// foo
// bar
var foo = 'bar';
console.log(`Let's meet at the ${foo}`);
// Let's meet at the bar

How to escape ampersands, semicolons, and curly braces in command-line powershell params?


By : Chrise Ra
Date : March 29 2020, 07:55 AM
it should still fix some issue I'm using a powershell script to generate a config file with database passwords and the like. The normal use of this script is to generate-and-use a password, but for a fleeting moment, I need to access a fellow developer's database, so I need to pass the password into the powershell script.
code :
powershell .\makeConfig.ps1 -password "'xxx<xxxx;xxxxx&x.xxxx}xx/xxx'" -otherparam 3
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