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How to write binary data to stdout in python 3?
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Programs using this can't be tested in IDLE 3: AttributeError: 'PseudoOutputFile' object has no attribute 'buffer'
– Damian Yerrick
May 18 '17 at 18:55
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Difference between \A \z and ^ $ in Ruby regular expressions
...of Regex treats \A as a literal 'A' (ref). So watch yourself out there and test.
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What is process.env.PORT in Node.js?
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terminal: set a new user environment variable, not permanently
export MY_TEST_PORT=9999
app.js: read the new environment variable from node app
console.log(process.env.MY_TEST_PORT)
terminal: run the node app and get the value
$ node app.js
9999
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Getting name of the class from an instance
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if all you want to do is test an object to see if it's a type of a certain Class
BOOL test = [self isKindOfClass:[SomeClass class]];
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Margin while printing html page
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This works now in Chrome 18 and IE9 (didn't test earlier versions). Still not working in Firefox 12, but you could do a server-side detection and add a body class <body class="firefox"> so in your css you can do body.firefox {margin: 0mm; padding: 0.25in;}, that...
Does Git Add have a verbose switch
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Output:
14:06:05.508517 git.c:415 trace: built-in: git add test.txt test2.txt
14:06:05.544890 git.c:415 trace: built-in: git config --get oh-my-zsh.hide-dirty
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.htaccess mod_rewrite - how to exclude directory from rewrite rule
...ollowing mod_rewrite rule:
RewriteEngine on
RewriteCond %{REQUEST_URI} !^/test/
RewriteCond %{REQUEST_URI} !^/my-folder/
RewriteRule (.*) http://www.newdomain.com/$1 [R=301,L]
This redirects (permanently with a 301 redirect) all traffic to the site to http://www.newdomain.com, except requests to ...
How to check if a table exists in a given schema
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It depends on what you want to test exactly.
Information schema?
To find "whether the table exists" (no matter who's asking), querying the information schema (information_schema.tables) is incorrect, strictly speaking, because (per documentation):
On...
How to override and extend basic Django admin templates?
...he following can:
app_index.html
change_form.html
change_list.html
delete_confirmation.html
object_history.html
For those templates that cannot be overridden in this way, you may
still override them for your entire project. Just place the new
version in your templates/admin directory. Thi...
explicit casting from super class to subclass
...t ClassCastException.
So if you are downcasting you should use instanceof test to avoid screwing up.
if (animal instanceof Dog) {
Dog dog = (Dog) animal;
}
Now a question comes to our mind. Why the hell compiler is allowing the downcast when eventually it is going to throw a java.lang.ClassCa...