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What is the purpose of setting a key in data.table?
I am using data.table and there are many functions which require me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
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Get selected option from select element
I am trying to get the selected option from a dropdown and populate another item with that text, as follows. IE is barking up a storm and it doesn't work in Firefox:
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How to get the size of a string in Python?
For example, I get a string:
5 Answers
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Display a float with two decimal places in Python
I have a function taking float arguments (generally integers or decimals with one significant digit), and I need to output the values in a string with two decimal places (5 -> 5.00, 5.5 -> 5.50, etc). How can I do this in Python?
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What is the default height of UITableViewCell?
I thought this information would have been easier to find :-)
8 Answers
8
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Set initial focus in an Android application
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I found this worked best for me.
In AndroidManifest.xml <activity> element add android:windowSoftInputMode="stateHidden"
This always hides the keyboard when entering the activity.
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Turn off deprecated errors in PHP 5.3
My server is running PHP 5.3 and my WordPress install is spitting these errors out on me, causing my session_start() to break.
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How to activate “Share” button in android app?
... answered Sep 26 '16 at 5:27
Daniel NyamasyoDaniel Nyamasyo
1,6881616 silver badges2020 bronze badges
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How to remove leading zeros using C#
How to remove leading zeros in strings using C#?
8 Answers
8
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How to correct indentation in IntelliJ
How can indentation be automatically (not manually) corrected in IntelliJ?
7 Answers
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