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Android Spanned, SpannedString, Spannable, SpannableString and CharSequence
... at combating baldness, snow removal, heat pump repair, making a soufflé, etc.
:-)
Are there any obvious performance impacts to be considered when using any one of them?
Interfaces, by definition, do not have "performance impacts" -- they are merely a description of an API.
I am not aware t...
Difference between natural join and inner join
...ith duplicate names, 'anonymous' (unnamed) columns, duplicate rows, nulls, etc. SQL doesn't treat tables as relations because it relies on column ordering etc.
The idea behind NATURAL JOIN in SQL is to make it easier to be more faithful to the relational model. The result of the NATURAL JOIN of two...
Single Line Nested For Loops
...te) set of elements. These include any container, lists, sets, generators, etc.
What is the order in which i and j are assigned to elements in object?
They are assigned in exactly the same order as they are generated from each list, as if they were in a nested for loop (for your first comprehe...
Add missing dates to pandas dataframe
...efore merging two dataframes of different index length where joins, merges etc. almost always leads to errors such as a column full of NaNs.
– user3661992
Sep 7 at 10:24
add a...
What's a good rate limiting algorithm?
...ard_message();
allowance -= 1.0;
There are no datastructures, timers etc. in this solution and it works cleanly :) To see this, 'allowance' grows at speed 5/8 units per seconds at most, i.e. at most five units per eight seconds. Every message that is forwarded deducts one unit, so you can't se...
Why is arr = [] faster than arr = new Array?
...ntext which may contain the "arguments" object, locally defined variables, etc. If we cannot find it in the Activation object, we begin looking up the scope chain until we reach the global scope. If nothing is found, we throw a ReferenceError.
Once we've located the variable declaration, we invoke...
C# Object Pooling Pattern implementation
...d/required lifetime of objects, the real reason that the pool is required, etc. Typically pools are special-purpose - thread pools, connection pools, etc. - because it is easier to optimize one when you know exactly what the resource does and more importantly have control over how that resource is ...
How do the likely/unlikely macros in the Linux kernel work and what is their benefit?
...nch prediction does work. Taken branches are problematic for instruction-fetch and decode even when they're predicted perfectly. Some CPUs statically predict branches that aren't in their history table, usually with assume not-taken for forward branches. Intel CPUs don't work that way: they don't...
What's the best online payment processing solution? [closed]
...lable to non-U.S. companies, easy to setup, reliable, cheap, customizable, etc. What are your experiences?
13 Answers
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CASCADE DELETE just once
...traint on some_table and all tables that have constraints on those tables, etc.
Postgres supports CASCADE with TRUNCATE command:
TRUNCATE some_table CASCADE;
Handily this is transactional (i.e. can be rolled back), although it is not fully isolated from other concurrent transactions, and has sev...