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What is the most efficient string concatenation method in python?
... idiomatic and thus easier for other python programmers to understand.
Finally, the golden rule of optimization: don't optimize unless you know you need to, and measure rather than guessing.
You can measure different methods using the timeit module. That can tell you which is fastest, instead of r...
Correct use of flush() in JPA/Hibernate
...nstructions they are supposed to send to the database, often until you actually commit the transaction.
For example, you call em.persist(), Hibernate remembers it has to make a database INSERT, but does not actually execute the instruction until you commit the transaction. Afaik, this is mainly done...
Can I publish a private NuGet package?
... similar teams at my company are working on. However, the assembly isn't really code that I want to share with the world.
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PermGen elimination in JDK 8
I have installed JDK 8 and trying to run Eclipse. I am getting following warning message:
6 Answers
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What's the difference of ContentType and MimeType
... What's the main difference between the
each one, and when is right to call
something mimetype as opposed to
content-type ? Am i being pitty and
grammar nazi?
The reason isn't only backward compatibility, and I'm afraid the usually excellent Django documentation is a bit hand-wavy about i...
check if directory exists and delete in one command unix
...y exists or not. This command may work and produce similar results but actually doing a test before the command makes more sense.
– Ankur Chauhan
Jan 28 '13 at 5:04
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How do I convert struct System.Byte byte[] to a System.IO.Stream object in C#?
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This is the best answer. It's concise and covers all the practical applications. There's a gotcha with just using the byte array based constructor as indicated here--the resulting stream is not re-sizable.
– Jduv
Jul 19 '12 at 3:56
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how to get program files x86 env variable?
...ogramFiles% variable points to the Program Files directory,
which stores all the installed programs of Windows and others. The
default on English-language systems is "C:\Program Files". In 64-bit
editions of Windows (XP, 2003, Vista), there are also
%ProgramFiles(x86)%, which defaults to "C:...
Difference between GeoJSON and TopoJSON
... encoding of coordinates, TopoJSON files are often an order of magnitude smaller than GeoJSON files. The secondary advantage of TopoJSON files is that encoding the topology has useful applications, such as topology-preserving simplification (similar to MapShaper) and automatic mesh generation (as in...
How to convert CharSequence to String?
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@TheOnlyAnil, does calling setText(CharSequence) not do what you need?
– Mike Samuel
May 4 '15 at 20:31
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