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Getting the array length of a 2D array in Java
I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code:
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How does a hash table work?
...) and calculates a number from it.
For simplicity, let's say that it just converts each letter and symbol into a number and sums them all up. In reality, it's a lot more complicated than that, but let's leave it at that for now.
The beauty of such an algorithm is that if you feed the same input in...
Explicit specialization in non-namespace scope [duplicate]
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incompliant in this case: as always :) ? Templates and VC++ don't mix that well :/
– Matthieu M.
Jun 16 '10 at 11:21
10
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When to use %r instead of %s in Python? [duplicate]
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The %s specifier converts the object using str(), and %r converts it using repr().
For some objects such as integers, they yield the same result, but repr() is special in that (for types where this is possible) it conventionally returns a re...
How to use ADB to send touch events to device using sendevent command?
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If you don't want to have to convert the hex to decimal, you can let your shell do it: adb shell input tap $((16#2f5)) $((16#69e)). Also, just to be pedantic, 0x2F5 and 0x69E are 757 and 1694 respectively... What did you use to convert between bases?
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Getting image dimensions without reading the entire file
...(jpg, png, ...)? Preferably, I would like to achieve this using only the standard class library (because of hosting restrictions). I know that it should be relatively easy to read the image header and parse it myself, but it seems that something like this should be already there. Also, I’ve verifi...
What is the difference between “int” and “uint” / “long” and “ulong”?
I know about int and long (32-bit and 64-bit numbers), but what are uint and ulong ?
5 Answers
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C/C++ check if one bit is set in, i.e. int variable
... there such a way to check if bit 3 in temp is 1 or 0 without bit shifting and masking.
21 Answers
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Average of 3 long integers
...ides all three values (it floors the values, so you 'lose' the remainder), and then divides the remainder:
long n = x / 3
+ y / 3
+ z / 3
+ ( x % 3
+ y % 3
+ z % 3
) / 3
Note that the above sample does not always work properly when h...
Get output parameter value in ADO.NET
...ially you just need to create a SqlParameter, set the Direction to Output, and add it to the SqlCommand's Parameters collection. Then execute the stored procedure and get the value of the parameter.
Using your code sample:
// SqlConnection and SqlCommand are IDisposable, so stack a couple using()...