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Rails find record with zero has_many records associated [duplicate]
... answered Mar 8 '12 at 6:31
AndrewAndrew
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How does Chrome's “Request Desktop Site” option work?
...t mobile sites will NOT switch back to desktop if loaded with a desktop UA string. So then Safari uses your original request? Nope. It seems to work even if you originally typed in the URL for the mobile site. I don't know how its implemented because the name of mobile versions is by no means standa...
How do I create a directory from within Emacs?
...u can also run single shell commands using M-!
You're basically sending a string to the command line so you don't get any nice auto-completion but it's useful if you know how to perform an action through the command line but don't know an Emacs equivalent way.
M-! mkdir /path/to/new_dir
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Why is there “data” and “newtype” in Haskell? [duplicate]
... Bool
inside the CoolBool was True or False:
helloMe :: CoolBool -> String
helloMe (CoolBool _) = "hello"
Instead of applying this function to a normal CoolBool, let's throw it a curveball and apply it to undefined!
ghci> helloMe undefined
"*** Exception: Prelude.undefined
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How to reset sequence in postgres and fill id column with new data?
I have a table with over million rows. I need to reset sequence and reassign id column with new values (1, 2, 3, 4... etc...). Is any easy way to do that?
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iOS: Convert UTC NSDate to local Timezone
...e:@"EST"]];
[df_local setDateFormat:@"yyyy.MM.dd G 'at' HH:mm:ss zzz"];
NSString* ts_utc_string = [df_utc stringFromDate:ts_utc];
NSString* ts_local_string = [df_local stringFromDate:ts_utc];
// you can also use NSDateFormatter dateFromString to go the opposite way
Table of formatting string par...
Get the POST request body from HttpServletRequest
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Easy way with commons-io.
IOUtils.toString(request.getReader());
https://commons.apache.org/proper/commons-io/javadocs/api-2.5/org/apache/commons/io/IOUtils.html
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Int or Number DataType for DataAnnotation validation attribute
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This is the better solution, since this covers strings. int.MaxValue only covers until 2.147.483.647
– Christian Gollhardt
Aug 19 '15 at 17:51
add ...
Duplicate ID, tag null, or parent id with another fragment for com.google.android.gms.maps.MapFragme
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The answer Matt suggests works, but it cause the map to be recreated and redrawn, which isn't always desirable.
After lots of trial and error, I found a solution that works for me:
private static View view;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bund...
How to get a function name as a string?
In Python, how do I get a function name as a string, without calling the function?
12 Answers
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