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How does the Brainfuck Hello World actually work?
...00 c5 82 |..|
Zeroes are offset. 82 is first and c5 is second byte representing ł (in order we will read them). |..| is graphical representation which is not possible in this case.
Well, if you pass ł as input to your BF program that reads single byt...
Popup弹出菜单扩展 · App Inventor 2 中文网
...逗号分隔列出：
从列表设置菜单项
SetMenuItems方法允许将菜单项定义为列表：
从文件加载菜单项
菜单定义也可以从文件中读取。在设计器中使用MenuItemsFromFile属性，在运行时使用LoadMenuItem...
C# switch statement limitations - why?
...nstruction.
The CIL switch is a jump table, that requires an index into a set of jump addresses.
This is only useful if the C# switch's cases are adjacent:
case 3: blah; break;
case 4: blah; break;
case 5: blah; break;
But of little use if they aren't:
case 10: blah; break;
case 200: blah; bre...
Execute Python script via crontab
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Labels for radio buttons in rails form
... e.g. <%= f.label :contactmethod, 'SMS', :value => 'sms' %>. This sets the "for" attribute of the label tag correctly, which makes clicking the label select the appropriate radio button. In the answer above, simply using the label helper will cause the "for" attribute to be incorrect when t...
Is there any haskell function to concatenate list with separator?
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Generating an Excel file in ASP.NET [closed]
...HttpContext.Current.Response.Clear();
HttpContext.Current.Response.Charset = "utf-16";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("windows-1250");
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}.xl...
When to wrap quotes around a shell variable?
...source1 $source2 $dest, but if for some unexpected reason dest doesn't get set, the third argument just disappears, and it will silently copy source1 over source2 instead of giving you an appropriate error for the blank destination (as it would have if you had quoted each argument).
...
R script line numbers at error?
...Duncan Murdoch just posted to r-devel on Sep 10 2009 about findLineNum and setBreapoint:
I've just added a couple of functions to R-devel to help with
debugging. findLineNum() finds which line of which function
corresponds to a particular line of source code; setBreakpoint() takes
the out...
No secret option provided to Rack::Session::Cookie warning?
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