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How to check if an object is a list or tuple (but not string)?
This is what I normally do in order to ascertain that the input is a list / tuple - but not a str . Because many times I stumbled upon bugs where a function passes a str object by mistake, and the target function does for x in lst assuming that lst is actually a list or tuple .
...
How to do paging in AngularJS?
...xpression that could be validly used in an ng-repeat, including filtering, ordering etc.
Works across controllers - the pagination-controls directive does not need to know anything about the context in which the paginate directive is called.
Demo : http://plnkr.co/edit/Wtkv71LIqUR4OhzhgpqL?p=previe...
SQL query to group by day
...ADD SaleDay AS DAY(Created) PERSISTED
and now you could easily group by, order by etc. by day, month or year of the sale:
SELECT SaleDay, SUM(Amount)
FROM dbo.Sales
GROUP BY SaleDay
Those calculated fields will always be kept up to date (when your "Created" date changes), they're part of your t...
How can I safely create a nested directory?
...use os.path.isdir followed by os.makedirs, the solution above reverses the order of the two operations. In doing so, it prevents a common race condition having to do with a duplicated attempt at creating the directory, and also disambiguates files from directories.
Note that capturing the exception...
2 column div layout: right column with fixed width, left fluid
...
Fantastic, simple solution and keeps the correct HTML order too!
– user1794295
Jul 11 '14 at 15:16
...
Why is String immutable in Java?
...ant Pool article, every application creates too many string objects and in order to save JVM from first creating lots of string objects and then garbage collecting them. JVM stores all string objects in a separate memory area called String constant pool and reuses objects from that cached pool.
When...
Is there a good reason to use upper case for SQL keywords? [closed]
...lies on the reader's ability to distinguish keywords versus identifiers in order to mentally parse the syntax.
The direct answer to your question, then, is more an answer to “why does the reader of SQL code benefit so much from uppercase keywords, when that's not as true for most modern languages...
Predicate in Java
...es.filter
Returns the elements that satisfy a predicate.
On higher-order function
Predicate allows Iterables.filter to serve as what is called a higher-order function. On its own, this offers many advantages. Take the List<Integer> numbers example above. Suppose we want to test if all...
jQuery - Trigger event when an element is removed from the DOM
...emove elements from the page (e.g. by using .html(), .replace(), etc).
In order to prevent various memory leak hazards, internally jQuery will try to call the function jQuery.cleanData() for each removed element regardless of the method used to remove it.
See this answer for more details: javascri...
How to get ELMAH to work with ASP.NET MVC [HandleError] attribute?
...CurrentContext().Raise(context.Exception);
}
}
and then register it (order is important) in Global.asax.cs:
public static void RegisterGlobalFilters (GlobalFilterCollection filters)
{
filters.Add(new ElmahHandledErrorLoggerFilter());
filters.Add(new HandleErrorAttribute());
}
...