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Rails: Using greater than/less than with a where statement
I'm trying to find all Users with an id greater than 200, but I'm having some trouble with the specific syntax.
9 Answers
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Is it safe to delete a NULL pointer?
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delete performs the check anyway, so checking it on your side adds overhead and looks uglier. A very good practice is setting the pointer to NULL after delete (helps avoiding double deletion and other similar memory corruption problems).
I'd also love ...
Can anyone explain this strange behavior with signed floats in C#?
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The bug is in the following two lines of System.ValueType: (I stepped into the reference source)
if (CanCompareBits(this))
return FastEqualsCheck(thisObj, obj);
(Both methods are [MethodImpl(MethodImplOptions.InternalCall)])
When all of the fields are 8 byte...
JavaScript null check
... “undefined”
When a function takes an argument, that argument is always declared even if its value is undefined, and so there won’t be any error. You are right about != null followed by !== undefined being useless, though.
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What is the Swift equivalent of isEqualToString in Objective-C?
I am trying to run the code below:
7 Answers
7
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Unioning two tables with different number of columns
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Is there a way to fill in a default value for the Null column?
– Hans
Jan 15 '14 at 14:22
3
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Illegal string offset Warning PHP
I get a strange PHP error after updating my php version to 5.4.0-3.
16 Answers
16
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How to create multidimensional array
Can anyone give me a sample/example of JavaScript with a multidimensional array of inputs? Hope you could help because I'm still new to the JavaScript.
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Select all child elements recursively in CSS
How can you select all child elements recursively?
2 Answers
2
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How to check if all of the following items are in a list?
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Operators like <= in Python are generally not overriden to mean something significantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me.
Use the equivalent and more clearly...