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ruby on rails f.select options with custom attributes
...=>c.currency_code}] },
selected_key = f.object.country_id) %>
If you need grouped options, you can use the grouped_options_for_select helper, like this (if @continents is an array of continent objects, each having a countries method):
<%= f.select :country_id, grouped_options_for_se...
Ignore .pyc files in git repository
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Put it in .gitignore. But from the gitignore(5) man page:
· If the pattern does not contain a slash /, git treats it as a shell
glob pattern and checks for a match against the pathname relative
to the location of the .gitignore file (relative to the toplevel of
th...
How to join components of a path when you are constructing a URL in Python
...eason.
So, I'd use something like '/'.join(s.strip('/') for s in pieces) (if the leading / must also be ignored -- if the leading piece must be special-cased, that's also feasible of course;-).
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Occurrences of substring in a string
... infinite loop. This can be fixed by moving the last line of code into the if block.
String str = "helloslkhellodjladfjhello";
String findStr = "hello";
int lastIndex = 0;
int count = 0;
while(lastIndex != -1){
lastIndex = str.indexOf(findStr,lastIndex);
if(lastIndex != -1){
coun...
How can I combine hashes in Perl?
...%hash1 always have unique keys. I would also prefer a single line of code if possible.
4 Answers
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Why should the “PIMPL” idiom be used? [duplicate]
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It's a pain to maintain though. But then again, if it is a library class the methods should not be changed much anyway. The code I'm looking at seems to be taking the safe road and using pimpl everywhere.
– JeffV
Sep 13 '08 at 15:23
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Can anyone explain CreatedAtRoute() to me?
...reated resource when you invoke a POST method to store some new object.
So if you POST an order item for instance, you might return a route like 'api/order/11' (11 being the id of the order obviously).
BTW I agree that the MSDN article is of no use in understanding this. The route you actually retu...
Can I have multiple primary keys in a single table?
... In this example, BOTH userid and userdataid are needed to identify/find a unique row. Not sure what the OP's intention was, but I came here looking to see if I could uniquely identify a row with one of a set of keys. For instance, I would like to identify a unique user with either a user...
How do I make a WinForms app go Full Screen
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this.WindowState = FormWindowState.Maximized;
}
But, interestingly, if you swap those last two lines the Taskbar remains visible. I think the sequence of these actions will be hard to control with the properties window.
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How to drop rows of Pandas DataFrame whose value in a certain column is NaN
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@wes-mckinney could please let me know if dropna () is a better choice over pandas.notnull in this case ? If so, then why ?
– stormfield
Sep 7 '17 at 11:53
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