What is the proper syntax for a method that checks a string for a pattern, and returns true or false if the regex matches? Basic idea: def has_regex?(string) pattern = /something/i return string =~ pattern end Use case: if has_regex?("something") # woohoo else # nothing found: panic! end ...
What's the opposite of triple equals matching in PHP? $mail_01 = filter_var($mail_01, FILTER_VALIDATE_EMAIL); if($mail !== false){ echo "Email address required"; } Is the !== usage correct? Thanks for any help. ...
mysql> ALTER TABLE bdds_arts ADD test VARBINARY; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 something wrong with varbinary type? here is output of mysql --version mysql Ver 14.12 Distrib 5.0.24a, for Win32 (...
I have a query with the following syntax: select x.a as a, x.b as b, x.c as c from (select distinct a from foo order by y) as x left join zzz.... left join yyy...; I want to now put in an order by into the outer select statement. attaching it to the end - it doesn't like the syntax, and putting it before the as is apparent...
Class Model<T>{ private T t; ..... private void someMethod(){ //now t is null Class c = t.getClass(); } ..... } Of course it throws NPE. Class c = t.getClass(); What syntax should i use to get class of T if my instance is null? Is it possible? ...
How do I do a paginator sort and also specify it to go to the first page: echo $paginator->sort('Make', 'Car.make'); If you're on page 6 and want to sort the list by car make. It sorts the list but puts you on page 6 of the sorted list. When someone clicks on the sort by "make" button, I want the paginator to take them to page 1 of th...
In another question answered here I found the following JavaScript code: function _dom_trackActiveElement(evt) { if (evt && evt.target) { document.activeElement = evt.target == document ? null : evt.target; } } But this syntax is unknown to me, could someone explain exactly what document.activeElement = evt.target =...
Some tables I am dealing with have null values and are throwing errors. So far ive tried a few solutions to deal with the nulls with no success. Here are the code samples from my efforts so far; If (r("datemodified").Equals(DBNull.Value)) Then datemodified = String.Empty Else datemodified = (...
Hi, Now that I have a better grasp of Classes and their importance in C#, I have a question about how to handle a certain situation. I have to perform 5-6 tests using 3 different external devices that all require about 10 or so commands to be setup at the begining of each test. So there are approx 10 commands for each device for 6 tes...
As per the python documentation,x<y<z comparison is translated to x<y and y<z and expression y is evaluated only once at most. Now my question is , does an expression y ( look at the code below) is evaluated only once here? if(x<y and y<z): ...
This code works as expected (does nothing, even doesn't produce warning/errors): l = lambda {|i|} l.call(1) This code produces warning (warning: multiple values for a block parameter (0 for 1)): l = lambda {|i|} l.call And this code fails with error (ArgumentError: wrong number of arguments (0 for 2)): l = lambda {|i, y|} l.call ...
Hi, I'm trying to sort a user table based on how many comments they have linked to them in a secondary comment-table, I figured a sub-select will be the best tool but I can't get the syntax correct. Users table testdata: id | user_id 1 | 1000 2 | 1001 3 | 1002 Comment table testdata id | link_id 1 | 1002 2 | 1000 3 | 1002 4 |...
public class Maze { public static final int ACTIVE = 0; public static final int EXPLORER_WIN = 1; public static final int MONSTER_WIN = 2; private Square[][] maze; private ArrayList<RandomOccupant> randOccupants; private Explorer explorer; private int rows; private int cols; public Maze(Square[][] maze, i...
Hi everyone, I just saw a code snippet with a piece of syntax that I have never seen before. What does bool start : 1; mean? I found it inside a class definition in a header file. ...
Hi, im trying to extract the most common YEAR from an array of DateTime objects using LINQ. can someone help me? With the following its telling me i need to implement IComparable.. DateTime modeDate = (from c in dates group c by c.Year into g select g).Max(...
I'm putting together a syntax for editing Java Manifest files (at github, if anyone's interested). I'm trying to collapse multiple single-line-comments (which I'm matching at the moment with syntax match manifestComment "#.*"). However, if I try to use a syntax region, then the entire file is marked and the entire thing collapses. What ...
When do I use an "OR" vs a || in a ColdFusion cfif statement? ...
I'm more a mysql person, but I have to do a db in pg and the following CREATE TABLE keeps generating syntax errors... I just get an error: ERROR: syntax error at or near "(" and error: ERROR: syntax error at or near ")" Googling around didn't give me much help... I'm sure that I'm doing something mysql-esque and that's causing problems...
I have a defined a function (GetDepth) which does something fairly trivial, eg takes in a 2x4 matrix and outputs a 2x1 matrix. I then have an 2x4xn matrix I want to apply it to, and I'm expecting an 2x1xn matrix result. What is the correct syntax to apply my function to the matrix without resorting to using a loop? ed. As requested, h...
For example: [TestFixtureSetUp] public void Init() { GetTestRepo(false); } [TestFixtureSetUp] in this example, what does it do? From my experience, [] usually refers to lists. ...