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Can someone explain collection_select to me in clear, simple terms?
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# then you should specify some collection or array of rows.
# It can be Author.where(..).order(..) or something like that.
# In your example it is:
Author.all,
# then you should specify methods for generating options
:id, # this is name of method that will be called for ...
Difference between adjustResize and adjustPan in android?
...room for the soft
keyboard. Rather, the contents of the window are automatically panned
so that the current focus is never obscured by the keyboard and users
can always see what they are typing. This is generally less desirable
than resizing, because the user may need to close the soft keyboard to
g...
How do I check for a network connection?
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You can check for a network connection in .NET 2.0 using GetIsNetworkAvailable():
System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable()
To monitor changes in IP address or changes in network availability use t...
Reading file contents on the client-side in javascript in various browsers
... described here, though not yet the File API). The API is a bit more complicated than the older Mozilla API, as it is designed to support asynchronous reading of files, better support for binary files and decoding of different text encodings. There is some documentation available on the Mozilla Deve...
JavaScript: Is there a way to get Chrome to break on all errors?
...er accurate. Use the link above ^
(link replaced by edited above) - you can now set it to break on all exceptions or just unhandled ones. (Note that you need to be in the Sources tab to see the button.)
Chrome's also added some other really useful breakpoint capabilities now, such as breaking on...
Renaming table in rails
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You would typically do this sort of thing in a migration:
class RenameFoo < ActiveRecord::Migration
def self.up
rename_table :foo, :bar
end
def self.down
rename_table :bar, :foo
end
end
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Why sizeof int is wrong, while sizeof(int) is right?
We know that sizeof is an operator used for calculating the size of any datatype and expression, and when the operand is an expression, the parentheses can be omitted.
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Set margin size when converting from Markdown to PDF with pandoc
...ns (like this http://johnmacfarlane.net/pandoc/demo/example13.pdf ). How can I get pandoc to produce something with smaller margins? I have looked through the pandoc user guide, but haven't found anything useful.
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What are commit-ish and tree-ish in Git?
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Identifiers #1-14 are all "commit-ish", because they all lead to commits, but
because commits also point to directory trees, they all ultimately lead to
(sub)directory tree objects, and can therefore also be used as "tree-ish".
#15 can also be used as tree-ish when ...
Static link of shared library function in gcc
How can I link a shared library function statically in gcc?
6 Answers
6
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