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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?

I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it. ...
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Why Java needs Serializable interface?

... This is clearly the better answer, I am disappointed that the selected answer is not this, it seems the posted chose with a "Im annoyed because I have to declare things serializable" agenda in mind. Its an example of some one wanting to free whell and not heed the security and design le...
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UINavigationController without navigation bar?

... In Xcode 4.3.2: Select the navigation controller in the storyboard Select the Attributes Inspector in the (right) Utilities panel Under the Navigation Controller category you have two check boxes: [] Shows Navigation Bar [] Shows Toolbar ...
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Is there a way to create multiline comments in Python?

... In any case, your text editor should also be able to easily comment-out a selected region (by placing a # in front of each line individually). If not, switch to a text editor that does. Programming in Python without certain text editing features can be a painful experience. Finding the right edito...
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Reading an image file into bitmap from sdcard, why am I getting a NullPointerException?

...g.ARGB_8888; Bitmap bitmap = BitmapFactory.decodeFile(photoPath, options); selected_photo.setImageBitmap(bitmap); or http://mihaifonoage.blogspot.com/2009/09/displaying-images-from-sd-card-in.html share | ...
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How can I easily view the contents of a datatable or dataview in the immediate window

... of this solution: You don't need Visual Studio! Here my example output: SELECT PackKurz, PackName, PackGewicht FROM verpackungen PackKurz | PackName | PackGewicht | ---------------------|----------------------|----------------------|- BB205 | BigB...
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RecyclerView onClick

... the ViewHolder itself contains all information in regards to what data is selected when the element itself is clicked, then the only responsibility of the container is the display of N elements, rather than that of handling the selection of a specific i-th element out of the N elements. The ListVie...
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Is there an S3 policy for limiting access to only see/access one bucket?

...source). As stated in this AWS blog post "as an aside, you currently can't selectively filter out certain buckets, so users must have permission to list all buckets for console access." – jwadsack Jun 25 '14 at 20:46 ...
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What is a pre-revprop-change hook in SVN, and how do I create it?

...n VisualSVN by right-clicking your repository name in VisualSVN Server and selecting "Properties...". You'll see a "Hooks" tab. In there you'll see the different types of hooks available. Select the right one, click "Edit" and paste the above code into it. Hope that helps VisualSVN users! ...
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CSS selector by inline style attribute

Is there a CSS selector to select this element by its inline style attribute value? 2 Answers ...