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How to pass object with NSNotificationCenter
... to send all kind of objects. Otherwise you might encounter random crashes etc.
– Johan Karlsson
Feb 17 '16 at 12:58
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How to run only one task in ansible playbook?
... tags:
- packages
- template: src=templates/src.j2 dest=/etc/foo.conf
tags:
- configuration
If you wanted to just run the “configuration” and “packages” part of a very long playbook, you could do this:
ansible-playbook example.yml --tags "configuration,pac...
Fastest hash for non-cryptographic uses?
...32, MD5 and SHA.
https://code.google.com/p/xxhash/
Note that this is the ordering on a 32-bit compilation. On a 64-bit compilation the performance order is likely very different. Some of the hashes are heavily based on 64-bit multiplications and fetches.
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Qt events and signal/slots
...e the button should function like a normal QPushButton (it can be clicked, etc). In Qt this is done by creating your own little reusable "component" (subclass of QPushButton), which reimplements QWidget::keyPressEvent. Pseudocode:
class NumericButton extends QPushButton
private void addToNumber...
Should I use PATCH or PUT in my REST API?
... 406 Not Acceptable
PUT /groups/{group id} { "attributes": { "name": .... etc. "status": "active" } }
response: 201 Created or 200 OK, depending on whether we made a new one.
A very important requirement is that PUT is idempotent: if you require side-effects when updating a Group (or changing an ...
Why do we need the “event” keyword while defining events?
...yone can remove other people's event handlers, raise the event themselves, etc - it's an encapsulation disaster.
For more on events (and delegates) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still co...
How do I escape a reserved word in Oracle?
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Python pandas: fill a dataframe row by row
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How to sort a collection by date in MongoDB?
...').find({}).sort({_id:-1})
This will sort your collection in descending order based on the date of insertion
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How to map with index in Ruby?
...in 1.8.7+), which mixes in Enumerable, so you can call map, select, reject etc. on it just like on an array, hash, range etc.
– sepp2k
Jan 15 '11 at 1:45
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