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Why use symbols as hash keys in Ruby?
A lot of times people use symbols as keys in a Ruby hash.
4 Answers
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Is there a simple way to convert C++ enum to string?
Suppose we have some named enums:
34 Answers
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How can I pass selected row to commandLink inside dataTable or ui:repeat?
I'm using Primefaces in a JSF 2 application. I have a <p:dataTable> , and instead of selecting rows, I want the user to be able to directly execute various actions on individual rows. For that, I have several <p:commandLink> s in the last column.
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what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
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Following are the three commands which appears same but have minute differences
hadoop fs {args}
hadoop dfs {args}
hdfs dfs {args}
hadoop fs <args>
FS relates to a generic file system which can point to any file systems like local, H...
How to check if a variable is a dictionary in Python?
... ele in d.values():
if isinstance(ele,dict):
for k, v in ele.items():
print(k,' ',v)
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
In the Mac and iOS platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message.
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What is the explicit promise construction antipattern and how do I avoid it?
I was writing code that does something that looks like:
2 Answers
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Does bit-shift depend on endianness?
Suppose I have the number 'numb'=1025 [00000000 00000000 00000100 00000001] represented:
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How to increment a pointer address and pointer's value?
Let us assume,
5 Answers
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Unix command-line JSON parser? [closed]
Can anyone recommend a Unix (choose your flavor) JSON parser that could be used to introspect values from a JSON response in a pipeline?
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