大约有 43,000 项符合查询结果(耗时:0.0385秒) [XML]

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LINQ's Distinct() on a particular property

...=> new { p.Id, p.Name }); Untested, but it should work (and it now at least compiles). It assumes the default comparer for the keys though - if you want to pass in an equality comparer, just pass it on to the HashSet constructor. ...
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Fling gesture detection on grid layout

...(logTag, "Horizontal Swipe was only " + Math.abs(deltaX) + " long, need at least " + MIN_DISTANCE); return false; // We don't consume the event } } // swipe vertical? else { if(Math.abs(deltaY) > MIN_DISTANCE){ ...
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What is the difference between Left, Right, Outer and Inner Joins?

...of which have lockers. You have a total of 50 lockers, 40 of which have at least 1 student and 10 lockers have no student. INNER JOIN is equivalent to "show me all students with lockers". Any students without lockers, or any lockers without students are missing. Returns 70 rows LEFT OUTER JOIN wou...
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How can a LEFT OUTER JOIN return more records than exist in the left table?

...the right table was so I only got records from the left where there was at least one record in the right table but thank you so much for the explanation. – Jay Wilde Sep 6 '18 at 17:43 ...
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Query for documents where array size is greater than 1

...numeric array indexes in query object keys. // Find all docs that have at least two name array elements. db.accommodations.find({'name.1': {$exists: true}}) You can support this query with an index that uses a partial filter expression (requires 3.2+): // index for at least two name array elemen...
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Laravel Check If Related Model Exists

... @Jocelyn Yes, it's Eloquent bug. Unfortunately there are at least a few of them for polymorphic relations, so obviously you can't rely on them in any way. – Jarek Tkaczyk Dec 28 '14 at 19:03 ...
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Child inside parent with min-height: 100% not inheriting height

I found a way to make a div container to occupy at least full height of a page, by setting min-height: 100%; . However, when I add a nested div and set height: 100%; , it doesn't stretch to container's height. Is there a way to fix it? ...
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Text size and different android screen sizes

...specify that these layout resources should be used only when there is at least 600dp of width available for your application's UI. You should either pick a width and design to it as your minimum size, or test what is the smallest width your layout supports once it's complete. Note:...
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Chrome doesn't delete session cookies

...standards and security holes in Chrome and neither does FF. See FF bug (at least not closed): bugzilla.mozilla.org/show_bug.cgi?id=443354 What a sad state for these two browsers. – lucian303 Oct 22 '12 at 20:41 ...
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Can't launch my app in Instruments: At least one target failed to launch

...te a new Developer Provisioning Profile with your device in the list or at least make sure that your machine is in the list of the profile's device. In Project settings -> Code Signing -> Provisioning Profile -> Debug : Set the newly created profile. In Targets settings -> Code Signing...