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Generating random numbers in Objective-C
... = (((float)arc4random()/0x100000000)*(high_bound-low_bound)+low_bound);
Convert result to a rounder Integer value:
int intRndValue = (int)(rndValue + 0.5);
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What does the brk() system call do?
...; before program start, the kernel would load the "text" and "data" blocks into RAM starting at address zero (actually a little above address zero, so that the NULL pointer genuinely didn't point to anything) and set the break address to the end of the data segment. The first call to malloc would t...
Binding to static property
... This answer is more appropriate to my case because I don't want to introduce DependencyObject to my source class. Thanks for the tip!
– Anthony Brien
Jun 2 '09 at 15:30
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Best way to work with dates in Android SQLite [closed]
... date column.
Retrieving dates as strings from SQLite you can then format/convert them as required into local regionalised formats using the Calendar or the android.text.format.DateUtils.formatDateTime method.
Here's a regionalised formatter method I use;
public static String formatDateTime(Conte...
Convert InputStream to byte array in Java
How do I read an entire InputStream into a byte array?
34 Answers
34
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How to iterate over values of an Enum having flags?
...lt;Enum> GetFlags(Enum value, Enum[] values)
{
ulong bits = Convert.ToUInt64(value);
List<Enum> results = new List<Enum>();
for (int i = values.Length - 1; i >= 0; i--)
{
ulong mask = Convert.ToUInt64(values[i]);
if (i == ...
Why does dividing two int not yield the right value when assigned to double?
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I would prefer to explicitly convert both a and b to double simply for clarity, but it really doesn't matter.
– John Dibling
Sep 27 '11 at 15:31
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python: How do I know what type of exception occurred?
...re except: doesn't give you the exception object to inspect
The exceptions SystemExit, KeyboardInterrupt and GeneratorExit aren't caught by the above code, which is generally what you want. See the exception hierarchy.
If you also want the same stacktrace you get if you do not catch the exception,...
Java: Get month Integer from Date
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java.time (Java 8)
You can also use the java.time package in Java 8 and convert your java.util.Date object to a java.time.LocalDate object and then just use the getMonthValue() method.
Date date = new Date();
LocalDate localDate = date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
in...
How do I generate random number for each row in a TSQL Select?
...imes in a single batch, rand() returns the same number.
I'd suggest using convert(varbinary,newid()) as the seed argument:
SELECT table_name, 1.0 + floor(14 * RAND(convert(varbinary, newid()))) magic_number
FROM information_schema.tables
newid() is guaranteed to return a different value each ti...