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how does multiplication differ for NumPy Matrix vs Array classes?
The numpy docs recommend using array instead of matrix for working with matrices. However, unlike octave (which I was using till recently), * doesn't perform matrix multiplication, you need to use the function matrixmultipy(). I feel this makes the code very unreadable.
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What is the difference between JSON and Object Literal Notation?
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Also note that JSON is a subset of Object Literal Notation
– Sean Kinsey
May 25 '10 at 14:14
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Best way to define error codes/strings in Java?
I am writing a web service in Java, and I am trying to figure out the best way to define error codes and their associated error strings . I need to have a numerical error code and an error string grouped together. Both the error code and error string will be sent to the client accessing the web ser...
How to capture no file for fs.readFileSync()?
Within node.js readFile() shows how to capture an error, however there is no comment for the readFileSync() function regarding error handling. As such, if I try to use readFileSync() when there is no file, I get the error Error: ENOENT, no such file or directory .
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How do I implement a callback in PHP?
How are callbacks written in PHP?
9 Answers
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scheduleAtFixedRate vs scheduleWithFixedDelay
What's the main difference between scheduleAtFixedRate and scheduleWithFixedDelay methods of ScheduledExecutorService ?
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What do linkers do?
... -r hello_world.o
which contains;
Relocation section '.rela.text' at offset 0x340 contains 1 entries:
Offset Info Type Sym. Value Sym. Name + Addend
00000000000c 000200000001 R_X86_64_64 0000000000000000 .data + 0
The format of this section is fixed docu...
Is it better to specify source files with GLOB or each file individually in CMake?
...ceptions to the rule:
There are times where globbing is preferable:
For setting up a CMakeLists.txt files for existing projects that don't use CMake.Its a fast way to get all the source referenced (once the build system's running - replace globbing with explicit file-lists).
When CMake isn't used...
How to get visitor's location (i.e. country) using geolocation? [duplicate]
I'm trying to extend the native geolocation function
9 Answers
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What's the best practice for primary keys in tables?
When designing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
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