public static BinomialDistribution ForCoinFlips(int numberOfCoinFlips)
{
BinomialDistribution result;
RwLock.EnterUpgradeableReadLock();
try
{
if (!CacheOfCalculatedDistributions.TryGetValue(numberOfCoinFlips, out result))
{
RwLock.EnterWriteLock();
try
{
result = CacheOfCalculatedDistributions[numberOfCoinFlips] =
new BinomialDistribution(numberOfCoinFlips);
CacheOfCalculatedDistributions[numberOfCoinFlips] = result;
}
finally
{
RwLock.ExitWriteLock();
}
}
}
finally
{
RwLock.ExitUpgradeableReadLock();
}
return(result);
}
public static BinomialDistribution ForCoinFlips(int numberOfCoinFlips)
{
BinomialDistribution result;
RwLock.EnterUpgradeableReadLock();
try
{
if (!CacheOfCalculatedDistributions.TryGetValue(numberOfCoinFlips, out result))
{
RwLock.EnterWriteLock();
try
{
result = CacheOfCalculatedDistributions[numberOfCoinFlips] =
new BinomialDistribution(numberOfCoinFlips);
CacheOfCalculatedDistributions[numberOfCoinFlips] = result;
}
finally
{
RwLock.ExitWriteLock();
}
}
}
finally
{
RwLock.ExitUpgradeableReadLock();
}
return result;
}