The SQL standard specifies that single-quotes in strings are escaped by putting two single quotes in a row. SQL works like the Pascal programming language in the regard. SQLite follows this standard. Example: INSERT INTO xyz VALUES(‘5 O”clock’); Ref : SQLite FAQ
I’d use tr: tr < file-with-nulls -d ‘\000’ > file-without-nulls If you are wondering if input redirection in the middle of the command arguments works, it does. Most shells will recognize and deal with I/O redirection (<, >, …) anywhere in the command line, actually.
You should start with the Wikipedia Filename page. It has a decent-sized table (Comparison of filename limitations), listing the reserved characters for quite a lot of file systems. It also has a plethora of other information about each file system, including reserved file names such as CON under MS-DOS. I mention that only because I … Read more
I tried your characters using font-extensions in iReport, These are the steps that I took Download (or use one on your pc) your desired ttf font (it need to support the characters), I used dejavu-serif. Install the font in iReport or in Jasper soft studio (click links to understand how) I used iReport 5.6 and … Read more
A simple example using a regular expression which you could change to allow/disallow whatever you like. $(‘input’).on(‘keypress’, function (event) { var regex = new RegExp(“^[a-zA-Z0-9]+$”); var key = String.fromCharCode(!event.charCode ? event.which : event.charCode); if (!regex.test(key)) { event.preventDefault(); return false; } });
var desired = stringToReplace.replace(/[^\w\s]/gi, ”) As was mentioned in the comments it’s easier to do this as a whitelist – replace the characters which aren’t in your safelist. The caret (^) character is the negation of the set […], gi say global and case-insensitive (the latter is a bit redundant but I wanted to mention … Read more
Your result will vary depending on what kind of terminal or console program you’re on, but yes, on most \b is a nondestructive backspace. It moves the cursor backward, but doesn’t erase what’s there. So for the hello worl part, the code outputs hello worl ^ …(where ^ shows where the cursor is) Then it … Read more
Reposting my post from How do I remove diacritics (accents) from a string in .NET? This method works fine in java (purely for the purpose of removing diacritical marks aka accents). It basically converts all accented characters into their deAccented counterparts followed by their combining diacritics. Now you can use a regex to strip off … Read more
On Python 2, you have to use u” literal to create a Unicode string. Also, you should pass re.UNICODE flag and convert your input data to Unicode (e.g., text = data.decode(‘utf-8′)): #!/usr/bin/env python import re text = u’This dog \U0001f602’ print(text) # with emoji emoji_pattern = re.compile(“[” u”\U0001F600-\U0001F64F” # emoticons u”\U0001F300-\U0001F5FF” # symbols & pictographs … Read more
There are two easy and safe rules which work not only in sh but also bash. 1. Put the whole string in single quotes This works for all chars except single quote itself. To escape the single quote, close the quoting before it, insert the single quote, and re-open the quoting. ‘I’\”m a s@fe $tring … Read more