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Can I make the foreign key field optional in Django model

... Abid AAbid A 5,99833 gold badges2828 silver badges3030 bronze badges 6 ...
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How to check if element has any children in Javascript?

... or the length property of childNodes: if (element.childNodes.length > 0) { // Or just `if (element.childNodes.length)` // It has at least one } If you only want to know about child elements (as opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, eve...
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iOS Equivalent For Android Shared Preferences

... 205 Use NSUserDefaults: - note that this is for small bits of data, such as the current level like ...
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Stream vs Views vs Iterators

...very hard to support in a general manner, and they didn't make version 2.8.0. Views are meant to be viewed much like a database view. It is a series of transformation which one applies to a collection to produce a "virtual" collection. As you said, all transformations are re-applied each time you n...
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Get java.nio.file.Path object from java.io.File

... Sled 15.7k2121 gold badges107107 silver badges143143 bronze badges answered Mar 19 '13 at 23:08 Vivin PaliathVivin Paliath ...
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How can I split a text into sentences?

... Georg 88022 gold badges77 silver badges2121 bronze badges answered Jan 1 '11 at 22:27 Ned BatchelderNed Batch...
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How to parse a JSON string into JsonNode in Jackson?

... | edited Apr 3 '15 at 20:37 John Gietzen 45k2828 gold badges135135 silver badges182182 bronze badges ...
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TypeScript or JavaScript type casting

... 301 You can cast like this: return this.createMarkerStyle(<MarkerSymbolInfo> symbolInfo); ...
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How to display string that contains HTML in twig template?

... answered Dec 2 '11 at 10:55 Aurimas LičkusAurimas Ličkus 9,00844 gold badges2020 silver badges2525 bronze badges ...
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Why are margin/padding percentages in CSS always calculated against width?

... 60 Transferring my comment to an answer, because it makes logical sense. However, please note that ...