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Function Pointers in Java
...t methodCaller(Object theObject, String methodName) {
return theObject.getClass().getMethod(methodName).invoke(theObject);
// Catch the exceptions
}
And then use it as in:
String theDescription = methodCaller(object1, "toString");
Class theClass = methodCaller(object2, "getClass");
Of cou...
T-SQL query to show table definition?
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This shows structure, constraints, contraint types etc. Just one thing to note: you must write full name of the datatable. Schema.TableName. Otherwise, it completely solves the problem and gives all info about table.
– FrenkyB
Mar 9 '15 ...
How do I run only specific tests in Rspec?
... :focus, which also prevents undesirables like 'binding.pry, console.log`, etc. from creeping in to the codebase.
– zetetic
Nov 7 '13 at 21:35
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How to append data to div using JavaScript?
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are there any considerations, constraints, etc. when using this method?
– som
Jan 30 '16 at 23:09
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Limit number of characters allowed in form input text field
...ou wanted the values to be between 1-50 you could or all positive numbers, etc.
– b3verelabs
Dec 17 '11 at 14:34
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PHP array: count or sizeof?
...s a lot of identically named wrappers for C functions (strlen(), printf(), etc)
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Can I change the color of Font Awesome's icon color?
...d, text-warning instead of text-yellow, text-success instead of text-green etc. depends on what you want.
– stanlee
9 hours ago
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Is MATLAB OOP slow or am I doing something wrong?
...at( a b ) , strcmp( a, b ) , retrieve first element of strfind( a, b ) , etc.
4 Answers
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Pure JavaScript: a function like jQuery's isNumeric() [duplicate]
...rseInt can result in unwanted false positives like "123abc", "2e1", "0x2", etc.. (even jQuery.isNumeric will parse true). I would use something like this function isNumeric(str) { return /^\d*\.{0,1}\d*$/.test(str); }
– ebob
May 1 '17 at 19:19
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What is the difference between 127.0.0.1 and localhost
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/etc/nsswitch.conf selects if hosts or DNS is used first for a host lookup, if nss is running.
– Mark Lakata
Feb 14 '19 at 20:16
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