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How to create a multiline UITextfield?

I am developing an application where user has to write some information. For this purpose I need a UITextField which is multi-line (in general UITextField is a single line). ...
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How to delete from a text file, all lines that contain a specific string?

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Why does 'git commit' not save my changes?

... As the message says: no changes added to commit (use "git add" and/or "git commit -a") Git has a "staging area" where files need to be added before being committed, you can read an explanation of it here. For your specific example, you can use: git commit -am "save are...
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NullPointerException accessing views in onCreate()

This is a canonical question for a problem frequently posted on StackOverflow. 13 Answers ...
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What is the difference between C, C99, ANSI C and GNU C?

I have started programming practice on codechef and have been confused by the difference between C and C99. What does C mean here? Is it C89? Check the languages at the bottom of this submit . It contains both C and C99. ...
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How can I capture the result of var_dump to a string?

I'd like to capture the output of var_dump to a string. 13 Answers 13 ...
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I can’t find the Android keytool

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Removing pip's cache?

... If using pip 6.0 or newer, try adding the --no-cache-dir option. If using pip older than pip 6.0, upgrade it with pip install -U pip. share ...
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How to check if string input is a number? [duplicate]

How do I check if a user's string input is a number (e.g. -1 , 0 , 1 , etc.)? 24 Answers ...
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Read specific columns from a csv file with csv module?

I'm trying to parse through a csv file and extract the data from only specific columns. 11 Answers ...