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How to hide keyboard in swift on pressing return key?

I am using UITextfied while clicking on textfied keyboard appear but when i pressed the return key, keyboard is not disappearing. I used the following code: ...
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Update multiple columns in SQL

... The "tiresome way" is standard SQL and how mainstream RDBMS do it. With a 100+ columns, you mostly likely have a design problem... also, there are mitigating methods in client tools (eg generation UPDATE statements) or by using ORMs ...
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How can I monitor the thread count of a process on linux?

I would like to monitor the number of threads used by a specific process on Linux. Is there an easy way to get this information without impacting the performance of the process? ...
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How can I reverse a list in Python?

...follow | edited Jun 17 '17 at 16:45 Guillaume Jacquenot 8,26055 gold badges3737 silver badges4444 bronze badges ...
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How to hide UINavigationBar 1px bottom line

I have an app that sometimes needs its navigation bar to blend in with the content. 45 Answers ...
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The difference between try/catch/throw and try/catch(e)/throw e

... The constructions try { ... } catch () { ... } /* You can even omit the () here */ try { ... } catch (Exception e) { ... } are similar in that both will catch every exception thrown inside the try block (and, unless you are simply using this to log the exceptions, should be avoided). No...
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Switch case with fallthrough?

I am looking for the correct syntax of the switch statement with fallthrough cases in Bash (ideally case-insensitive). In PHP I would program it like: ...
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Recommended way to stop a Gradle build

...etecting a problem? I can use an assert, throw an exception, do a System.exit (bad idea), or use a dedicated function in Gradle (but I could not find one). What is the best way for Gradle (and why?). ...
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Get class name using jQuery

... After getting the element as jQuery object via other means than its class, then var className = $('#sidebar div:eq(14)').attr('class'); should do the trick. For the ID use .attr('id'). If you are inside an event handler or other jQuery method, where the element is the pure DOM node wi...
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Named placeholders in string formatting

... when formatting string, I can fill placeholders by name rather than by position, like that: 19 Answers ...