大约有 40,000 项符合查询结果(耗时:0.0451秒) [XML]

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How to easily initialize a list of Tuples?

..." }, new Hold { Id = 2, Name = "You" } }; var anonymousProjections = holds.Select(x => new { SomeNewId = x.Id, SomeNewName = x.Name }); var namedTuples = holds.Select(x => (TupleId: x.Id, TupleName: x.Name)); Reuse the tuples later with grouping methods or use a method to construct the...
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compilation warning: no rule to process file for architecture i386

...w:- Some .md, .mdown .h files are included in the Compile Sources Step 1) Select Project Navigator Step 2) Select your project Step 3) Select your targetStep Step 4) Select Build PhasesStep Step 5) Move files which we don't want the compiler to process from Compile Sources to Copy Bundle Resource...
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How to get a one-dimensional scalar array as a doctrine dql query result?

...as callback, instead of writing a closure. $result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult(); $ids = array_map('current', $result); See Petr Sobotka's answer below for additional info regarding memory usage. PHP >= 5.5 As jcbwlkr's answered below, the rec...
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Ruby: Easiest Way to Filter Hash Keys?

...answer: Even though this is answer (as of the time of this comment) is the selected answer, the original version of this answer is outdated. I'm adding an update here to help others avoid getting sidetracked by this answer like I did. As the other answer mentions, Ruby >= 2.5 added the Hash#sli...
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What's the fastest way to merge/join data.frames in R?

..., in fact, they are placed on tables which were overwritten before the sql select ever runs and that, in part, accounts for why its so slow. The idea of sqldf is that the data frames in your R session constitute the data base, not the tables in sqlite. Thus each time the code refers to an unqualif...
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How to call a stored procedure from Java and JPA

...s ( postId IN NUMBER, commentCount OUT NUMBER ) AS BEGIN SELECT COUNT(*) INTO commentCount FROM post_comment WHERE post_id = postId; END; You can call it from JPA as follows: StoredProcedureQuery query = entityManager .createStoredProcedureQuery("count_comments"...
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Find UNC path of a network drive?

...le from Windows Explorer into the body of a Word document or Outlook email Select 'Create Hyperlink Here' The inserted text will be the full UNC of the dragged item. share | improve this answer ...
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Can't compile project when I'm using Lombok under IntelliJ IDEA

...ation processing is checked. Ensure Store generates sources relative to is selected based on the project's module settings (if Module output directory doesn't work, come back and try the other setting). Click Apply. Click Plugins. Click Marketplace. Set search field to: lombok Install Lombok. Click ...
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Recommended SQL database design for tags or tagging [closed]

...ries which you will do: Output all Tags for one Item, draw a Tag-Cloud and select all items for one Tag Title. All Tags for one Item: 3-Table: SELECT Tag.Title FROM Tag JOIN ItemTag ON Tag.TagID = ItemTag.TagID WHERE ItemTag.ItemID = :id 2-Table: SELECT Tag.Title FROM Tag WHERE Tag.Item...
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How to set IntelliJ IDEA Project SDK

... for me to set up the Project SDK. When I click on "JDK" it asks for me to select the home directory of the JDK as shown in this image. ...