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Is it possible to make the -init method private in Objective-C?
...release" method of creating singletons. It's virtually always unnecessary and is just adding complication for no real significant advantage.
Instead, just write your code such that your +sharedWhatever method is how you access a singleton, and document that as the way to get the singleton instance...
grepping using the “|” alternative operator
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@stalinko: you should be able to use the time command to find out.
– Nathan Fellman
Jun 7 '14 at 20:11
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When would you use a List instead of a Dictionary?
What is the difference between a List of KeyValuePair and a Dictionary for the same types? Is there an appropriate time to use one or the other?
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Alter column, add default constraint
I have a table and one of the columns is "Date" of type datetime. We decided to add a default constraint to that column
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jQuery using append with effects
...isplays is updated as soon as the div is appended. So, to combine Mark B's and Steerpike's answers:
Style the div you're appending as hidden before you actually append it. You can do it with inline or external CSS script, or just create the div as
<div id="new_div" style="display: none;"> .....
vs vs for inline and block code snippets
...e is going to have some inline code ("when using the foo() function...") and some block snippets. These tend to be XML, and have very long lines which I prefer the browser to wrap (i.e., I don't want to use <pre> ). I'd also like to put CSS formatting on the block snippets.
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How do I set the size of an HTML text box?
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A textbox is <input type="textbox" /> and a textarea is <textarea></textarea> there is a difference.
– Michael Garrison
Sep 19 '12 at 3:14
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Does opacity:0 have exactly the same effect as visibility:hidden
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Also, with "opacity: 0" Flash objects are rendered, and sprite's constructor is triggered, but with "visibility: hidden" not.
– pepkin88
Dec 30 '10 at 22:40
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in entity framework code first, how to use KeyAttribute on multiple columns
...ty map to a PK column. But how can I define a PK on more then one column, and specifically, how can I control order of the columns in the index? Is it a result of the order of properties in the class?
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How can I make pandas dataframe column headers all lowercase?
I want to make all column headers in my pandas data frame lower case
5 Answers
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