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Xcode stuck at “Your application is being uploaded”

... fine enough, it became a headache for me. But after getting some valuable comments from some of the expert users of stack-overflow and after doing some more search on the internet, I have found some quality answers. This answer helped me the most: application loader stuck at the stage of "Authentic...
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Rails find_or_create_by more than one attribute?

...e factored out of rails just the attribute specific ones. https://github.com/rails/rails/blob/4-2-stable/guides/source/active_record_querying.md Example GroupMember.find_or_create_by_member_id_and_group_id(4, 7) became GroupMember.find_or_create_by(member_id: 4, group_id: 7) ...
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How to map calculated properties with JPA and Hibernate

...SQL fragment: @Formula("PRICE*1.155") private float finalPrice; Or even complex queries on other tables: @Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)") private Date firstOrderDate; Where id is the id of the current entity. The following blog post is worth the...
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Set the absolute position of a view

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MongoDB/NoSQL: Keeping Document Change History

A fairly common requirement in database applications is to track changes to one or more specific entities in a database. I've heard this called row versioning, a log table or a history table (I'm sure there are other names for it). There are a number of ways to approach it in an RDBMS--you can wri...
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Using git to get just the latest revision

... set to 1 to create a shallow clone with a history truncated to the latest commit. For example: git clone --depth 1 https://github.com/user/repo.git To also initialize and update any nested submodules, also pass --recurse-submodules and to clone them shallowly, also pass --shallow-submodules. For e...
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Android Facebook integration with invalid key hash

... key is wrong. You may get the hash key using two steps. One is through a command prompt. Another one is through coding. The hash key through a command prompt is working on the first time only. I don't know the reason. I have also got the same problem. So I tried it through programmatically. Follo...
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Fixed page header overlaps in-page anchors

...n my site (unrelated to anchors) been driving me crazy. Your non-clickable comment really helped. I owe ya big! – zipzit Mar 21 '14 at 16:27 9 ...
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How do I check if string contains substring? [duplicate]

...st the opposite of this. Will return a -1 if it does not exist. w3schools.com/jsref/jsref_indexof.asp Return value: A Number, representing the position where the specified searchvalue occurs for the first time, or -1 if it never occurs. For my needs: if (str.toLowerCase().indexOf("yes") == -1) ...
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how to remove untracked files in Git?

...e this if you don't want to remove ignored files) Use with Caution! These commands can permanently delete arbitrary files, that you havn't thought of at first. Please double check and read all the comments below this answer and the --help section, etc., so to know all details to fine-tune your comm...