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How can I determine if a variable is 'undefined' or 'null'?
...it again
The comments suggesting the use of typeof are simply wrong. Yes, my solution above will cause a ReferenceError if the variable doesn't exist. This is a good thing. This ReferenceError is desirable: it will help you find your mistakes and fix them before you ship your code, just like compil...
When are C++ macros beneficial? [closed]
...f exceptions. Here's how I do that:
#define HANDLE_EXCEPTIONS \
catch (::mylib::exception& e) { \
throw gcnew MyDotNetLib::Exception(e); \
} \
catch (::std::exception& e) { \
throw gcnew MyDotNetLib::Exception(e, __LINE__, __FILE__); \
} \
catch (...) { \
throw gcnew MyDotNetLi...
Command line CSV viewer? [closed]
...
Works great on my MAC. Very useful for reading large files.
– James Lim
Dec 11 '12 at 1:55
4
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Reminder - \r\n or \n\r?
...very time I can't remember which key I shouldn't be looking at - I look at my "Enter" key and I think "something's very wrong here"... haha over thinking it!
– Wayne Uroda
May 20 '13 at 1:20
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django template display item value or empty string
My code in template is like this:
2 Answers
2
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maximum value of int
...urn 0;
}
It might be architecture dependent but it does work at least in my setup.
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How to use clock() in C++
...ue in seconds.
Java System.nanoTime() returns long value in nanoseconds.
my reference: Algorithms toolbox week 1 course part of data structures and algorithms specialization by University of California San Diego & National Research University Higher School of Economics
so you can add this lin...
Can you center a Button in RelativeLayout?
...roid:background="#ff0000">
<Button
android:id="@+id/btn_mybutton"
android:layout_height="wrap_content"
android:layout_width="124dip"
android:layout_marginTop="5dip"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
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How to dynamically insert a tag via jQuery after page load?
I'm having problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load:
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Select all columns except one in MySQL?
... trying to use a select statement to get all of the columns from a certain MySQL table except one. Is there a simple way to do this?
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