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Ruby on Rails: Where to define global constants?

I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on. ...
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How to pass arguments to a Button command in Tkinter?

... library functools, like this: from functools import partial #(...) action_with_arg = partial(action, arg) button = Tk.Button(master=frame, text='press', command=action_with_arg) share | improve t...
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What's the algorithm to calculate aspect ratio?

...store.steampowered.com/hwsurvey, section 'Primary Display Resolution' steam_file = './steam.txt' # Taken from http://upload.wikimedia.org/wikipedia/commons/thumb/f/f0/Vector_Video_Standards4.svg/750px-Vector_Video_Standards4.svg.png accepted_ratios = ['5:4', '4:3', '3:2', '8:5', '5:3', '16:9', '17:...
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How to sort a list in Scala by two fields?

...ant for longer names (Wild, Wilder, Wilderman). If you write rows.sortBy(_.lastName + _.firstName) with 2 underlines, the method expects two parameters: <console>:14: error: wrong number of parameters; expected = 1 rows.sortBy (_.lastName + _.firstName) ...
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How to match a String against string literals in Rust?

...intln!("0"), "b" => println!("1"), "c" => println!("2"), _ => println!("something else!"), } There's also an as_str method as of Rust 1.7.0: match stringthing.as_str() { "a" => println!("0"), "b" => println!("1"), "c" => println!("2"), _ => println...
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Difference between passing array and array pointer into function in C

... eax, 0Fh add eax, 0Fh shr eax, 4 shl eax, 4 mov [ebp+var_C], eax mov eax, [ebp+var_C] call sub_401730 call sub_4013D0 mov [ebp+var_8], 2 mov [ebp+var_4], 4 lea eax, [ebp+var_8] mov [esp+18h+var_18], eax call sub_401290 call _getch leave retn So th...
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“CAUTION: provisional headers are shown” in Chrome debugger

...to net-internals You can view Recorded Log file Here https://netlog-viewer.appspot.com/#import click on events (###) and use the textfield to find the event related to your resource (use parts of the URL). Finally, click on the event and see if the info shown tells you something. For Older Version...
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How can I make an EXE file from a Python program? [duplicate]

..., but it only works on Windows. PyInstaller works on Windows and Linux. Py2app works on the Mac. share | improve this answer | follow | ...
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ASP.NET Web API OperationCanceledException when browser cancels the request

...s a cancelled task like an unhandled exception (it logs the problem in the Application event log). In the meantime, you could try something like the code below. It adds a top-level message handler that removes the content when the cancellation token fires. If the response has no content, the bug sh...
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jQuery trigger file input

... <img src="http://upload.wikimedia.org/wikipedia/commons/thumb/3/34/Icon_-_upload_photo_2.svg/512px-Icon_-_upload_photo_2.svg.png" width="20px" height="20px"/> </label> <input type="file" value="upload" id="uploadFile" class="uploadFile" /> </div> </body>...