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Why do you need ./ (dot-slash) before executable or script name to run it in bash?
...WD first
relative to PATH after
Then, if you wanted to run /bin/someprog from your distro, and you did:
someprog
it would sometimes work, but others it would fail, because you might be in a directory that contains another unrelated someprog program.
Therefore, you would soon learn that this is...
Hadoop “Unable to load native-hadoop library for your platform” warning
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The answer depends... I just installed Hadoop 2.6 from tarball on 64-bit CentOS 6.6. The Hadoop install did indeed come with a prebuilt 64-bit native library. For my install, it is here:
/opt/hadoop/lib/native/libhadoop.so.1.0.0
And I know it is 64-bit:
[hadoop@VMWHADTES...
Why would I make() or new()?
... the reason new() and make() need to be different.
The following examples from Effective Go make it very clear:
p *[]int = new([]int) // *p = nil, which makes p useless
v []int = make([]int, 100) // creates v structure that has pointer to an array, length field, and capacity field. So, v is immedi...
Why is my program slow when looping over exactly 8192 elements?
Here is the extract from the program in question. The matrix img[][] has the size SIZE×SIZE, and is initialized at:
2 An...
Google Espresso or Robotium [closed]
...rast this with Robotium's API, where the test author is expected to choose from 30+ click methods. Further, Robotium exposes dangerous methods like getCurrentActivity (what does current mean anyway?) and getView, which allow you to operate on objects outside of the main thread (see the point above)....
How do I define global variables in CoffeeScript?
...in the coffee-script, that way it prevents the compiled JavaScript version from leaking everything into the global namespace.
So since there's no way to make something "leak" into the global namespace from the coffee-script side of things on purpose, you need to define your global variables as pr...
Best practices/guidance for maintaining assembly version numbers
...spent a long time trying to come up with an easy to use versioning system. From what you have already said in your question it is clear that you have understood one important point, the assembly version numbers are not synonymous with the product version. One is technically driven, and the other is ...
How to check if PHP array is associative or sequential?
...y, how to determine whether an array has sequential numeric keys, starting from 0
Consider which of these behaviours you actually need. (It may be that either will do for your purposes.)
The first question (simply checking that all keys are numeric) is answered well by Captain kurO.
For the seco...
How to set session timeout in web.config
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If it's not working from web.config, you need to set it from IIS.
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What are the differences between “git commit” and “git push”?
... one is used to interact with a remote repository.
Here is a nice picture from Oliver Steele, that explains the git model and the commands:
Read more about git push and git pull on GitReady.com (the article I referred to first)
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