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Active Record - Find records which were created_at before today

I want to get all records where the created_at field is less than today (a date). Is there anything like: 4 Answers ...
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Use email address as primary key?

...u store is going to take up space in RAM. – Jonathan Allen Mar 11 '15 at 8:40 In case any one wonders, as I did, a GUI...
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Repository Pattern Step by Step Explanation [closed]

...a summary, I would describe the wider impact of the repository pattern. It allows all of your code to use objects without having to know how the objects are persisted. All of the knowledge of persistence, including mapping from tables to objects, is safely contained in the repository. Very often, y...
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Proper way to renew distribution certificate for iOS

My distribution certificate is expiring on June 7th, along with all of my provisioning files. How do I properly renew it? Should I revoke it now and request a new one? If I do that than will all my live apps be taken down? ...
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Scanner vs. BufferedReader

... In currently latest JDK6 release/build (b27), the Scanner has a smaller buffer (1024 chars) as opposed to the BufferedReader (8192 chars), but it's more than sufficient. As to the choice, use the Scanner if you want to parse the file, use the BufferedReader if you want to read the file lin...
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Remove all whitespaces from NSString

...ng stringByReplacingOccurrencesOfString:@" " withString:@""] 2) If you really need to remove a set of characters (namely not only the space character, but any whitespace character like space, tab, unbreakable space, etc), you could split your string using the whitespaceCharacterSet then joining th...
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Changing capitalization of filenames in Git

...ase insensitive OS. See commit baa37bf by David Turner (dturner-tw). mv: allow renaming to fix case on case insensitive filesystems "git mv hello.txt Hello.txt" on a case insensitive filesystem always triggers "destination already exists" error, because these two names refer to the same path from...
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Importing CSV with line breaks in Excel 2007

... @user1859022 I double that for Hungarian locale. actually any locale that uses comma as decimal separator has to use semicolon as field separator for the double-click csv open to work properly – robotik Jul 28 '16 at 11:53 ...
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Can you determine if Chrome is in incognito mode via a script?

...his, or the accepted answer should change. Not to take away from the originally accepted answer as it was the correct solution at the time. – Cruncher Aug 12 '19 at 15:13 1 ...
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Need to list all triggers in SQL Server database with table name and table's schema

I need to list all triggers in SQL Server database with table name and table's schema. 19 Answers ...