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RuntimeWarning: invalid value encountered in divide

... Python indexing starts at 0 (rather than 1), so your assignment "r[1,:] = r0" defines the second (i.e. index 1) element of r and leaves the first (index 0) element as a pair of zeros. The first value of i in your for loop is 0, so rr gets th...
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How do I undo “Scope to this” in Visual Studio 2012?

...rk for me in VS2017.. just stuck in the "scoped" folder. dammit - had to restart VS – Piotr Kula May 11 '17 at 12:21 ...
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What is the difference between a WCF Service Application and a WCF Service Library?

... A service library is a library of services that a host can reference and startup. If you start with a service library (recommended) you can then choose any host you wish (a windows service, IIS/ASP.NET, or even a console application) and you'd just reference your library from your new host. Choo...
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Can an Android Toast be longer than Toast.LENGTH_LONG?

...tText(text); textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.START); textView.setClickable(false); textView.setFocusable(false); textView.setFocusableInTouchMode(false); textView.setTextColor(android.graphics.Color.WHITE); // textView.setBackgrou...
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Why does python use 'else' after for and while loops?

...ct. The relevant section is "Distinguishing multiple exit points in loops" starting at 15:50 and continuing for about three minutes. Here are the high points: The for ... else construct was devised by Donald Knuth as a replacement for certain GOTO use cases; Reusing the else keyword made sense bec...
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Export Postgresql table data using pgAdmin

... it generates dump having table data script starts with COPY command not INSERT. Anyway to generate script with INSERT commands. – Muhammad Imran Tariq Jun 29 '12 at 7:42 ...
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system(“pause”); - Why is it wrong?

... I had this same question when I first started C a few years ago, and I was pointed to that same article. I use getchar() personally. – John T Jul 10 '09 at 4:39 ...
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Force SSL/https using .htaccess and mod_rewrite

...ne above, for it's simplicity), but the following may be, at least, a good start. RewriteEngine on # Check for POST Submission RewriteCond %{REQUEST_METHOD} !^POST$ # Forcing HTTPS RewriteCond %{HTTPS} !=on [OR] RewriteCond %{SERVER_PORT} 80 # Pages to Apply RewriteCond %{REQUEST_URI} ^something_...
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Is it possible to install another version of Python to Virtualenv?

...usr/bin/python) --clear Clear out the non-root install and start from scratch --no-site-packages Don't give access to the global site-packages dir to the virtual environment --unzip-setuptools Unzip Setuptools or Distribute when installing it --rel...
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How to read a CSV file into a .NET Datatable

... We always used to use the Jet.OLEDB driver, until we started going to 64 bit applications. Microsoft has not and will not release a 64 bit Jet driver. Here's a simple solution we came up with that uses File.ReadAllLines and String.Split to read and parse the CSV file and manual...