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Rake just one migration
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rake db:migrate:redo VERSION=xxxxxxx, but that will run the down and then the up step. You could do this in conjunction with commenting out the down step temporarily.
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Performance surprise with “as” and nullable types
...'m just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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Unbalanced calls to begin/end appearance transitions for
...the real view controller, but you must have the tab bar controller present and dismiss.
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Converting JSON String to Dictionary Not List
I am trying to pass in a JSON file and convert the data into a dictionary.
6 Answers
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Where is svcutil.exe in Windows 7?
...n to specify things such as binding of service, the address of the service and the contract.
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How to determine MIME type of file in android?
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First and foremost, you should consider calling MimeTypeMap#getMimeTypeFromExtension(), like this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
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jquery: $(window).scrollTop() but no $(window).scrollBottom()
... <div> that has to be a certain distance from the bottom of the page and the page has expandable/collapsible items, it's going to change the body height and therefore the distance from the bottom.
– crash springfield
Apr 28 '17 at 19:10
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Swift make method parameter mutable?
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inout keyword should be placed between parameter name and parameter type like this: func reduceToZero(x: inout Int) in current Swift 3 version.
– Agustí Sánchez
Sep 24 '16 at 8:59
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How to avoid “Permission denied” when using pip with virtualenv
...env permission problems might occur when you create the virtualenv as sudo and then operate without sudo in the virtualenv.
As found out in your question's comment, the solution here is to create the virtualenv without sudo to be able to work (esp. write) in it without sudo.
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How to convert a string of numbers to an array of numbers?
...from techfoobar
(x)=>{return parseInt(x)} // lambda are shorter and parseInt default is 10
(x)=>{return +x} // diff. with parseInt in SO but + is better in this case
x=>+x // no multiple args, just 1 function call
I hope it is a bit mor...