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undefined method `source_index' for Gem:Module (NoMethodError)
I'm running a Rails 2.3.5 application and upon running script/server I am shown the following:
5 Answers
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Convert a String representation of a Dictionary to a dictionary?
... literal structures: strings, numbers, tuples, lists, dicts, booleans,
and None.
For example:
>>> eval("shutil.rmtree('mongo')")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1, in <module>
File "/opt/Python...
Truncate number to two decimal places without rounding
...obably know, weird precision things can happen with floating point values (and on the other side of the spectrum, if the number happens to be 15, sounds like the OP wants 15.00).
– T.J. Crowder
Nov 15 '10 at 17:38
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If my interface must return Task what is the best way to have a no-operation implementation?
... to the interface, the class LazyBar must return a task from its method (and for argument's sake can't be changed). If LazyBar s implementation is unusual in that it happens to run quickly and synchronously - what is the best way to return a No-Operation task from the method?
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How do I use a custom deleter with a std::unique_ptr member?
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Assuming that create and destroy are free functions (which seems to be the case from the OP's code snippet) with the following signatures:
Bar* create();
void destroy(Bar*);
You can write your class Foo like this
class Foo {
std::unique_...
The Android emulator is not starting, showing “invalid command-line parameter”
... simple "Hello World" program in Eclipse . I added nothing to a Java file and only added a text view in file main.xml as
...
Running Windows batch file commands asynchronously
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Using the START command to run each program should get you what you need:
START "title" [/D path] [options] "command" [parameters]
Every START invocation runs the command given in its parameter and returns immediately, unless executed with a ...
Fixing JavaScript Array functions in Internet Explorer (indexOf, forEach, etc.) [closed]
As detailed elsewhere , and otherwise apparently well-known, Internet Explorer (definitely version 7, and in some instances, version 8) do not implement key functions, in particular on Array (such as forEach , indexOf , etc).
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Is there a C# case insensitive equals operator?
...ensitive comparison, use this method. If you just want to make sure "FILE" and "file" are both accepted, use "OrdinalIgnoreCase" or your code might not work in places like Turkish locales. For more info, see moserware.com/2008/02/does-your-code-pass-turkey-test.html
– Jeff Mose...
How to get the user input in Java?
...stem.in);
String s = scan.next();
int i = scan.nextInt();
BufferedReader and InputStreamReader classes
import java.io.BufferedReader;
import java.io.InputStreamReader;
//...
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s = br.readLine();
int i = Integer.parseInt...