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                    | Title | Test
                        Details
                        
                        
                            All existing TLDs (Top-Level Domains) according to IANA specifications | 
                
                    | Expression | 
                            (a(?:[cdefgilmnoqrstuwxz]|ero|(?:rp|si)a)|b(?:[abdefghijmnorstvwyz]iz)|c(?:[acdfghiklmnoruvxyz]|at|o(?:m|op))|d[ejkmoz]|e(?:[ceghrstu]|du)|f[ijkmor]|g(?:[abdefghilmnpqrstuwy]|ov)|h[kmnrtu]|i(?:[delmnoqrst]|n(?:fo|t))|j(?:[emop]|obs)|k[eghimnprwyz]|l[abcikrstuvy]|m(?:[acdeghklmnopqrstuvwxyz]|il|obi|useum)|n(?:[acefgilopruz]|ame|et)|o(?:m|rg)|p(?:[aefghklmnrstwy]|ro)|qa|r[eosuw]|s[abcdeghijklmnortuvyz]|t(?:[cdfghjklmnoprtvwz]|(?:rav)?el)|u[agkmsyz]|v[aceginu]|w[fs]|y[etu]|z[amw])
                         | 
                
                    | Description | This regexp matches all existing TLDs (Top-Level Domains) according to IANA specifications as of 14/07/2007. | 
                
                    | Matches | all ccTLDs (Country-Code Top-Level Domains) | all gTLDs (Generic Top-Level Domains) | .arpa | 
                
                    | Non-Matches | n.o.n - e.x.i.s.t.i.n.g   T.L.D.s | 
                
                    | Author | Rating:  Daniel Beck | 
            
        
            
                
                    | Title | Test
                        Details
                        
                        
                            Fraction numbers | 
                
                    | Expression | 
                            (?:-(?!0))?\d+(?:(?: \d+)?/\d+)?
                         | 
                
                    | Description | This regexp matches string which represents a fraction.
This fraction can be in these forms:<br />
1. # or -# (not -0)<br />
2. #/# or -#/# (not -0/#)<br />
3. # #/# or -# #/# (not -0 #/#) | 
                
                    | Matches | -1, 1, -1/2, 1/2, -1 2/3, 1 2/3 | 0, 0/1, 1/0, 1 0/2, 1 2/0 | 
                
                    | Non-Matches | letters | negative zero | / | #/ | /# | # / | # #/ | # /# | 
                
                    | Author | Rating:  Daniel Beck | 
            
        
    
        
        
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