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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...
Git error on git pull (unable to update local ref)
... May need both these commands:git gc --prune=now git remote prune origin from stackoverflow.com/questions/2998832/…
– bryan
Jan 15 at 21:50
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Change the URL in the browser without loading the new page using JavaScript
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Sample code is cut and pasted from developer.mozilla.org/en/DOM/Manipulating_the_browser_history . Which actually bothers explaining what foo and bar mean in this case.
– mikemaccana
Feb 1 '11 at 11:45
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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...
Add up a column of numbers at the Unix shell
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... | paste -sd+ - | bc
is the shortest one I've found (from the UNIX Command Line blog).
Edit: added the - argument for portability, thanks @Dogbert and @Owen.
share
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improve t...
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...
Is there a good tutorial on MSBuild scripts? [closed]
...ct, and I need to create a build script; a build script that I can trigger from my cruisecontrol server. Since nant has not been maintained for ages, I figure that MSBuild is the way to go.
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