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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
... difference between GENERATED BY DEFAULT and GENERATED ALWAYS, see https://www.cybertec-postgresql.com/en/sequences-gains-and-pitfalls/.
For altering the sequence, see https://popsql.io/learn-sql/postgresql/how-to-alter-sequence-in-postgresql/.
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Inserting a Link to a Webpage in an IPython Notebook
...elow shows the output from the Notebook.
Code in Markdown cell:
"https://www.tensorflow.org/images/colab_logo_32px.png" # link to website
<img src="tidyflow.png" /> # The image file (This path is the same folder as Notebook file)
## <font color = cyan> Some Colored Text in Noteb...
How to see if an NSString starts with a certain other string?
...olved, which I believe the question hints at. Consider the case of "HTTP://WWW...". But the biggest problem is that the proposed solution will throw an exception when it encounters "ftp" or a string less than 4 characters. The hasPrefix method does not have the same problem.
– ...
How to ignore whitespace in a regular expression subject string?
...ild the string dynamically of course.
You can see it working here: http://www.rubular.com/r/zzWwvppSpE
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What is the meaning of polyfills in HTML5?
...at functionality built in. "
Source and example of polyfill here:
http://www.programmerinterview.com/index.php/html5/html5-polyfill/
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How can I check that a form field is prefilled correctly using capybara?
...John'):
expect(page).to have_xpath("//input[@value='John']")
See http://www.w3schools.com/xpath/xpath_syntax.asp for more info.
For perhaps a prettier way:
expect(find_field('Your name').value).to eq 'John'
EDIT: Nowadays I'd probably use have_selector
expect(page).to have_selector("input[va...
Using msbuild to execute a File System Publish Profile
...
Found the answer here:
http://www.digitallycreated.net/Blog/59/locally-publishing-a-vs2010-asp.net-web-application-using-msbuild
Visual Studio 2010 has great new Web Application Project publishing
features that allow you to easy publish your web app...
XML Validation with XSD in Visual Studio IDE
...t;
In the XSD file's schema element:
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://yourdomain.com/yourschema.xsd"
xmlns:this="http://yourdomain.com/yourschema.xsd"
elementFormDefault="qualified">
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</xs:schema>
A note on using T...
Running a specific test case in Django when your app has a tests directory
...problem and instead of using django-nose I followed this link here: http://www.pioverpi.net/2010/03/10/organizing-django-tests-into-folders/. You need to open you init.py and import your tests.
Ex in init.py: from unique_test_file import *
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How to find memory leak in a C++ code/project?
... T* t = new T[size]
use "smart pointers" like boost smart pointers (http://www.boost.org/doc/libs/1_46_1/libs/smart_ptr/smart_ptr.htm)
my personal favorite: make sure you have understood the concept of ownership of a pointer, and make sure that everywhere where you use pointers, you know which code ...