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Pry: show me the stack
...play the callstack (with show-stack), and so on:
see here:
Frame number: 0/64
From: /Users/johnmair/ruby/rails_projects/personal_site/app/controllers/posts_controller.rb @ line 7 PostsController#index:
5: def index
6: @posts = Post.all
=> 7: binding.pry
8: end
[1] pry(#<P...
How did Google manage to do this? Slide ActionBar in Android application
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150
In fact, there's a way to do this. Even without implementing your own ActionBar.
Just have a lo...
How can I see the specific value of the sql_mode?
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| @@sql_mode |
+------------+
| |
+------------+
1 row in set (0.00 sec)
mysql> set sql_mode=ORACLE;
Query OK, 0 rows affected (0.00 sec)
mysql> SELECT @@sql_mode;
+-------------------------------------------------------------------------------------------------------------------...
How can I create a UIColor from a hex string?
How can I create a UIColor from a hexadecimal string format, such as #00FF00 ?
47 Answers
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How to npm install to a specified directory?
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340
You can use the --prefix option:
mkdir -p ./install/here/node_modules
npm install --prefix ./in...
Why does substring slicing with index out of range work?
...s. Look what happens when you do the same thing to a list:
>>> [0, 1, 2, 3, 4, 5][3]
3
>>> [0, 1, 2, 3, 4, 5][3:4]
[3]
Here the difference is obvious. In the case of strings, the results appear to be identical because in Python, there's no such thing as an individual character ...
The cast to value type 'Int32' failed because the materialized value is null
...where there can be unexpected nulls in different places. ...DefaultIfEmpty(0).Sum(0) can help in this (quite simple) case, where there might be no elements and sql's SUM returns null whereas c# expect 0.
A more general approach is to use ?? which will be translated to COALESCE whenever there is a r...
Add leading zeroes to number in Java? [duplicate]
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1330
String.format (https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Formatter.html#syntax)
I...
Move an item inside a list?
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answered Jul 3 '10 at 23:15
David ZDavid Z
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Is it possible to modify variable in python that is in outer, but not global, scope?
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100
Python 3.x has the nonlocal keyword. I think this does what you want, but I'm not sure if you ...