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how to get first three characters of an NSString?
...dCharacterSequenceAtIndex:2])];
substringToIndex of NSString is indexing by code unit, emoji takes two code units.
make sure check the index yourself.
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Fill between two vertical lines in matplotlib
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brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
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I suggest carefully reading and implementing the sync strategy discussed by Dan Grover at iPhone 2009 conference, available here as a pdf document.
This is a viable solution and is not that difficult to implement (Dan implemented this in several of its applications), overlapping the solution desc...
What is PAGEIOLATCH_SH wait type in SQL Server?
...this:
Select * from <table> where <col1> = <value> order by <PrimaryKey>
, check that you have a composite index on (col1, col_primary_key).
If you don't have one, then you'll need either a full INDEX SCAN if the PRIMARY KEY is chosen, or a SORT if an index on col1 is chosen...
Download Github pull request as unified diff
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Judging by what these return and the the links in the docs at developer.github.com/v3/media/… , the .diff URL gives a straight diff to the default branch based on git-diff git-scm.com/docs/git-diff output, and the .patch URL gives ...
What is the difference between Nexus and Maven?
...w Maven uses repositories:
Maven leverages the concept of a repository by retrieving the artifacts necessary to build an application and deploying the result of the build process into a repository. Maven uses the concept of structured repositories so components can be retrieved to support the bu...
How do I search within an array of hashes by hash values in ruby?
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How do you sort a list in Jinja2?
..., Jinja2's built-in sort filter allows you to specify an attribute to sort by:
{% for movie in movie_list|sort(attribute='rating') %}
See http://jinja.pocoo.org/docs/templates/#sort
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Check if a div exists with jquery [duplicate]
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Unless in code above they got something like $('#DivID') = null; Lol)
– ZurabWeb
Nov 6 '13 at 21:14
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Rails hidden field undefined method 'merge' error
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It works fine in Ruby 1.9 & rails 4
<%= f.hidden_field :service, value: "test" %>
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