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Error: could not find function … in R
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Error: could not find function "plot.prcomp"
Firstly, you shouldn't be calling S3 methods directly, but lets assume plot.prcomp was actually some useful internal function in package foo. To call such function if you know what you are doing requires the use of :::. You also need to know the names...
What are the differences between virtual memory and physical memory?
...re (in case of other implementations of virtual memory, we maybe shouldn't call it the "page table"). The page table is in physical memory as well - often in kernel-reserved spaces that user programs cannot write over.
Virtual memory is typically larger than physical memory - there wouldn't be much...
Can a project have multiple origins?
...s as you want, but you can only have one remote named "origin". The remote called "origin" is not special in any way, except that it is the default remote created by Git when you clone an existing repository. You can configure a second remote, push to/pull from that remote, and setup some branches t...
Camera access through browser
...u could try this:
<input type="file" capture="camera" accept="image/*" id="cameraInput" name="cameraInput">
but it has to be iOS 6+ to work. That will give you a nice dialogue for you to choose either to take a picture or to upload one from your album i.e.
An example can be found here:
C...
How do I pre-populate a jQuery Datepicker textbox with today's date?
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This will not work, first you should call $(".date-pick").datepicker(); and then $(".date-pick").datepicker('setDate', new Date());
– Misha Akopov
Jun 15 '15 at 4:53
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Using Emacs to recursively find and replace in text files not already open
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Maybe because you're calling C:\WINDOWS\system32\find.exe, not GNU find.
– Jazz
Nov 12 '08 at 12:42
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Finding diff between current and last version
...to know the diff between head and any commit you can use:
git diff commit_id HEAD
And this will launch your visual diff tool (if configured):
git difftool HEAD^ HEAD
Since comparison to HEAD is default you can omit it (as pointed out by Orient):
git diff @^
git diff HEAD^
git diff commit_id
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How can I add an item to a IEnumerable collection?
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It depends - it may be worth it, but I'm tempted to call it premature optimization unless Concat is called in a loop repeatedly; and if it is, you have bigger problems anyway, because every time you Concat, you get one more layer of enumerator - so by the end of it the single ...
Unexpected Caching of AJAX results in IE8
...preventing IE from caching the response.
Note that if you have other Ajax calls going on where you do want caching, this will disable it for those too. In that case, switch to using the $.ajax() method and enable that option explicitly for the necessary requests.
See http://docs.jquery.com/Ajax/jQ...
Verify object attribute value with mockito
I have a method call which I want to mock with mockito. To start with I have created and injected an instance of an object on which the method will be called. My aim is to verify one of the object in method call.
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