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Should I use pt or px?
What is the difference between pt and px in CSS? Which one should I use and why?
5 Answers
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How do I use boolean variables in Perl?
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@BlueWaldo: you can also use cmp and <=> when comparing and assigning the results of the comparison to a scalar. $var = $var1 cmp $var2; 'cmp' and '<=>' (used for numeric comparisons) returns -1, 0, or 1 if left argument is less than, equal to,...
Finding the number of days between two dates
...I think returning a negative number of days provides relevant information. And you should be using $your_date-$now, if you want a future date to return a positive integer.
– Tim
Mar 2 '12 at 18:49
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How to chain scope queries with OR instead of AND?
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and just for safety's sake, it's worth expressing this as Person.where("name = ? OR lastname = ?", 'John', 'Smith')
– CambridgeMike
Nov 9 '11 at 3:55
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What are bitwise shift (bit-shift) operators and how do they work?
I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators) ...
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delete vs delete[] operators in C++
What is the difference between delete and delete[] operators in C++?
7 Answers
7
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What's the difference between `on` and `live` or `bind`?
... vs delegate. In future versions of jQuery, these methods will be removed and only on and one will be left.
Examples:
// Using live()
$(".mySelector").live("click", fn);
// Equivalent `on` (there isn't an exact equivalent, but with good reason)
$(document).on("click", ".mySelector", fn);
// ...
Why does jQuery or a DOM method such as getElementById not find the element?
...ers parse HTML documents from top to bottom. Elements are added to the DOM and scripts are (generally) executed as they're encountered. This means that order matters. Typically, scripts can't find elements which appear later in the markup because those elements have yet to be added to the DOM.
Cons...
Does PostgreSQL support “accent insensitive” collations?
...r now
This approach is more efficient as other solutions floating around, and safer.
Create an IMMUTABLE SQL wrapper function executing the two-parameter form with hard-wired schema-qualified function and dictionary.
Since nesting a non-immutable function would disable function inlining, base it o...
How to permanently set $PATH on Linux/Unix? [closed]
... session. In case of the shell script you must use a specific shell syntax and export or set commands.
System wide
/etc/environment List of unique assignments, allows references. Perfect for adding system-wide directories like /usr/local/something/bin to PATH variable or defining JAVA_HOME. Used ...