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Referring to the null object in Python
...ents of a function and then explicitly test for it.
def my_function(value, param=None):
if param is None:
# Do something outrageous!
You can return it as the default when trying to get to an object's attribute and then explicitly test for it before doing something special.
value = getat...
PHP Function with Optional Parameters
I've written a PHP function that can accepts 10 parameters, but only 2 are required. Sometimes, I want to define the eighth parameter, but I don't want to type in empty strings for each of the parameters until I reach the eighth.
...
Smooth GPS data
...ndroid's sensors to produce a better estimate. The code has a single free parameter Q, expressed in metres per second, which describes how quickly the accuracy decays in the absence of any new location estimates. A higher Q parameter means that the accuracy decays faster. Kalman filters generally...
BroadcastReceiver with multiple filters or multiple BroadcastReceivers?
...s:
filter for refresh only
IntentFilter filterRefresh = new IntentFilter(Params.INTENT_REFRESH);
filter for refresh and update
IntentFilter filterRefreshUpdate = new IntentFilter();
filterRefreshUpdate.addAction(Params.INTENT_REFRESH);
filterRefreshUpdate.addAction(Params.INTENT_UPDATE);
now ...
Spring 3.0 - Unable to locate Spring NamespaceHandler for XML schema namespace [http://www.springfra
...ide WEB-INF folder. The changes to be applied are for web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
/WEB-INF/applicationContext-security.xml
</param-value>
</context-p...
Select columns from result set of stored procedure
...r table(col1 col1Type,..
insert into @tablevar(col1,..) exec MyStoredProc 'param1', 'param2'
SELECT col1, col2 FROM @tablevar
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
...
public static bool In<T>(this T source, params T[] list)
{
if(null==source) throw new ArgumentNullException("source");
return list.Contains(source);
}
Allows me to replace:
if(reallyLongIntegerVariableName == 1 ||
reallyLongIntegerVariableName == 6 ||
...
List of Big-O for PHP functions
...on, Union, Subtraction:
array_intersect_key if intersection 100% do O(Max(param_i_size)*∑param_i_count, for all i), if intersection 0% intersect O(∑param_i_size, for all i)
array_intersect if intersection 100% do O(n^2*∑param_i_count, for all i), if intersection 0% intersect O(n^2)
array_in...
Calculate the number of business days between two dates?
...nk holidays in the middle of the week
/// </summary>
/// <param name="firstDay">First day in the time interval</param>
/// <param name="lastDay">Last day in the time interval</param>
/// <param name="bankHolidays">List of bank holidays excluding we...
Gridview height gets cut
...uper.onMeasure(widthMeasureSpec, expandSpec);
ViewGroup.LayoutParams params = getLayoutParams();
params.height = getMeasuredHeight();
}
else
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public void setExpand...