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Rails find record with zero has_many records associated [duplicate]

... Bah, found it here: https://stackoverflow.com/a/5570221/417872 City.includes(:photos).where(photos: { city_id: nil }) share | improve this answer | ...
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How do I skip a match when using Ctrl+D for multiple selections in Sublime Text 2?

...| edited May 21 '14 at 11:04 skywinder 20.3k1515 gold badges8787 silver badges121121 bronze badges answe...
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How to find if a native DLL file is compiled as x64 or x86?

...s or /all flag and its the first file header listed. dumpbin /headers cv210.dll 64-bit Microsoft (R) COFF/PE Dumper Version 10.00.30319.01 Copyright (C) Microsoft Corporation. All rights reserved. Dump of file cv210.dll PE signature found File Type: DLL FILE HEADER VALUES 8664 ...
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How to convert std::string to LPCSTR?

...LPCSTR (Long Pointer to Constant STRing) -- means that it's a pointer to a 0 terminated string of characters. W means wide string (composed of wchar_t instead of char). share | improve this answer ...
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Is there a built in function for string natural sort?

...tsort import natsorted, ns >>> x = ['Elm11', 'Elm12', 'Elm2', 'elm0', 'elm1', 'elm10', 'elm13', 'elm9'] >>> natsorted(x, key=lambda y: y.lower()) ['elm0', 'elm1', 'Elm2', 'elm9', 'elm10', 'Elm11', 'Elm12', 'elm13'] >>> natsorted(x, alg=ns.IGNORECASE) # or alg=ns.IC ['elm0...
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Preventing Laravel adding multiple records to a pivot table

...te/… – Rob Gordijn Jul 5 '13 at 8:08 ...
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Maintain the aspect ratio of a div with CSS

...entage value for padding-bottom, like this: .demoWrapper { padding: 10px; background: white; box-sizing: border-box; resize: horizontal; border: 1px dashed; overflow: auto; max-width: 100%; height: calc(100vh - 16px); } div { width: 100%; padding-bottom: 75%; background: g...
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Alter column, add default constraint

... answered Jan 19 '10 at 17:07 SQLMenaceSQLMenace 122k2323 gold badges194194 silver badges218218 bronze badges ...
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jQuery append() vs appendChild()

... 105 The main difference is that appendChild is a DOM method and append is a jQuery method. The seco...
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Why is reading lines from stdin much slower in C++ than Python?

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