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Checking whether a variable is an integer or not [duplicate]
How do I check whether a variable is an integer?
42 Answers
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UITableview: How to Disable Selection for Some Rows but Not Others
I am displaying in a group tableview contents parsed from XML. I want to disable the click event on it (I should not be able to click it at all) The table contains two groups. I want to disable selection for the first group only but not the second group. Clicking the first row of second group nav...
Restricting input to textbox: allowing only numbers and decimal point
How can I restrict input to a text-box so that it accepts only numbers and the decimal point?
32 Answers
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Why does integer division in C# return an integer and not a float?
Does anyone know why integer division in C# returns an integer and not a float?
What is the idea behind it? (Is it only a legacy of C/C++?)
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How to get the ActionBar height?
I am trying to get the height of the ActionBar (using Sherlock) every time an activity is created (specially to handle configuration changes on rotation where the ActionBar height might change).
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Why doesn't java.util.Set have get(int index)?
I'm sure there's a good reason, but could someone please explain why the java.util.Set interface lacks get(int Index) , or any similar get() method?
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Volatile vs Static in Java
Is it correct to say that static means one copy of the value for all objects and volatile means one copy of the value for all threads?
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What happens when there's insufficient memory to throw an OutOfMemoryError?
I am aware that every object requires heap memory and every primitive/reference on the stack requires stack memory.
11 Answ...
Insert Update trigger how to determine if insert or update
I need to write an Insert, Update Trigger on table A which will delete all rows from table B whose one column (say Desc) has values like the value inserted/updated in the table A's column (say Col1). How would I go around writing it so that I can handle both Update and Insert cases. How would I dete...
Return empty cell from formula in Excel
I need to return an empty cell from an Excel formula, but it appears that Excel treats an empty string or a reference to an empty cell differently than a true empty cell. So essentially I need something like
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