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How to sort objects by multiple keys in Python?
Or, practically, how can I sort a list of dictionaries by multiple keys?
8 Answers
8
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Powershell equivalent of bash ampersand (&) for forking/running background processes
...file.txt is in the current directory.
The output is not displayed automatically. You need to run Receive-Job with the ID of the job as parameter.
NOTE: Regarding your initial example, "bg sleep 30" would not work because sleep is a Powershell commandlet. Start-Process only works when you actually ...
C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
...om now.
The abstract machine in the C++98/C++03 specification is fundamentally single-threaded. So it is not possible to write multi-threaded C++ code that is "fully portable" with respect to the spec. The spec does not even say anything about the atomicity of memory loads and stores or the order...
Custom error pages on asp.net MVC3
...t's of type IController so there's absolutely nothing preventing you from calling this method. And by the way Execute was protected in the Controller class as well in MVC 3, so there's no change in this regard.
– Darin Dimitrov
Oct 7 '13 at 10:29
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How to change the text on the action bar
...pportActionBar().setTitle("Hello world App"); // provide compatibility to all the versions
=> Customizing Action Bar,
For example:
@Override
public void setActionBar(String heading) {
// TODO Auto-generated method stub
com.actionbarsherlock.app.ActionBar actionBar = getSupportAction...
What is the difference between a map and a dictionary?
... terms ("Object" in Javascript, "Hash" in Ruby, "Table" in Lua), but those all have separate meanings in programming too, so I'd avoid them.
See here for more info.
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How can I create a self-signed cert for localhost?
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I followed all these steps and I'm getting a ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome 60 and Safari 10.1.2 doesn't like it either.
– styfle
Aug 5 '17 at 21:19
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How to create an array of 20 random bytes?
...ong random number generator (also thread safe) without using a third party API, you can use SecureRandom.
Java 6 & 7:
SecureRandom random = new SecureRandom();
byte[] bytes = new byte[20];
random.nextBytes(bytes);
Java 8 (even more secure):
byte[] bytes = new byte[20];
SecureRandom.getInsta...
Android Quick Actions UI Pattern
...ed on. I'd like to implement this but I cannot find some sample code or an API to help me out.
4 Answers
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How to find keys of a hash?
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There is function in modern JavaScript (ECMAScript 5) called Object.keys performing this operation:
var obj = { "a" : 1, "b" : 2, "c" : 3};
alert(Object.keys(obj)); // will output ["a", "b", "c"]
Compatibility details can be found here.
On the Mozilla site there is also a sn...