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What is the difference between null and undefined in JavaScript?
I want to know what the difference is between null and undefined in JavaScript.
33 Answers
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“Could not load type [Namespace].Global” causing me grief
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I'm not sure then. All I can suggest for right now is to rebuild and check the contents of namespaces in your assembly with ILDASM.
– PhilPursglove
Jan 5 '10 at 14:30
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Actual meaning of 'shell=True' in subprocess
...es it provides.
Where the interactions with the shell are nontrivial, you now require the reader and maintainer of the Python script (which may or may not be your future self) to understand both Python and shell script. Remember the Python motto "explicit is better than implicit"; even when the Pyt...
Can't connect to local MySQL server through socket homebrew
...l
sudo ln -s /tmp/mysql.sock /var/mysql/mysql.sock
This solved it for me. Now my phpMyAdmin works happily with localhost and 127.0.0.1.
Credit goes to Henry
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Maven Modules + Building a Single Specific Module
... For anyone hitting this page in 2011, this is the better answer. There's now better support for multi-modules within maven itself (Maven 2.1 and above), you don't need to use the reactor plugin.
– Spedge
May 20 '11 at 9:39
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What is the difference between memmove and memcpy?
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@Alcott, don't use memcpy if you don't know that they don't overlap - use memmove instead. When there is no overlap, memmove and memcpy are equivalent (although memcpy might be very, very, very slightly faster).
– bdonlan
Sep ...
window.onload vs document.onload
... including its content (images, CSS, scripts, etc.).
In some browsers it now takes over the role of document.onload and fires when the DOM is ready as well.
document.onload
It is called when the DOM is ready which can be prior to images and other external content is loaded.
How well are they ...
Having Django serve downloadable files
...e all headers are encoded to ascii format before sending. Only way that I know of to circumvent this problem is to reduce X-sendfile filenames to ones that consists only ascii.
– Ciantic
May 31 '10 at 16:13
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json.dumps vs flask.jsonify
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jsonify() handles lists now. See this commit.
– Jeff Widman
Jan 25 '16 at 19:14
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Passing arguments to require (when loading module)
...t it? My module won't make explicit use of this app argument, but I don't know if it is required by node.js for some internal thing. If it's ok, my module declaration would look like this: module.exports = function (db) {
– Ulysses Alves
Nov 11 '15 at 12:09
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