ee37a74088
git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@34 014f5005-505e-4b48-8d0a-63407b615a7c
28 lines
1.0 KiB
Python
28 lines
1.0 KiB
Python
# Relational
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# Copyright (C) 2008 Salvo "LtWorf" Tomaselli
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#
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# Relation is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
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'''Custom types for relational algebra'''
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class rstring (str):
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'''String subclass with some custom methods'''
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def isFloat(self):
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'''True if the string is a float number, false otherwise'''
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lst=['0','1','2','3','4','5','6','7','8','9','.']
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for i in self:
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if i not in lst:
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return False;
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return True; |