...lso accept derived types. So unless you actually need the type object (for whatever reason), using isinstance() is preferred over type(). The second parameter of isinstance() also accepts a tuple of types, so it’s possible to check for multiple types at once. isinstance will then return true, if ...

... I am using ImageMagick 6.6.9-7 on Ubuntu 12.04. What worked for me was the following: convert test.png -transparent white transparent.png That changed all the white in the test.png to transparent. ...

... you can run pod install --verbose to see what's going on behind the scenes.. at least you'll know where it's stuck at (it could be a git clone operation that's taking too long because of your slow network etc) to have an even better idea of why it seems to be stuck...

... about global variables in other languages it means something different to what it does in PHP. That's because variables aren't really global in PHP. The scope of a typical PHP program is one HTTP request. Session variables actually have a wider scope than PHP "global" variables because they typical...

I use Vim. I open a file. I edit it and I want to see what I've edited before I save it. 14 Answers ...

... @WeDoTDD what are you talking about? These scripts are meant to be used similarly to how makefile works. Using it as this example or as you've mentioned to run gulp is a perfectly reasonable use case. For simple tasks I now don't even...

... to respond to Joins are just cartesian products with some lipgloss What a load of bollocks. Restrictions are applied as early as possible, most restrictive first. You've read the theory, but you haven't understood it. Joins are treated as "cartesian products to which predicates apply" only b...

...d of the problem in option #1, we need to have some kind of information of what type a node in the JSON object is. The problem is that in Typescript, these things are compile-time constructs and we need them at runtime – but runtime objects simply have no awareness of their properties until they a...

... images. When to use a certain image compression format really depends on what is being compressed. Related question: Ruthlessly compressing large images for the web share | improve this answer ...

...apache user does not have read/write permissions on the directory. Here's what you do in Ubuntu Make sure all files are owned by the Apache group and user. In Ubuntu it is the www-data group and user chown -R www-data:www-data /path/to/webserver/www Next enabled all members of the www-data group...