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What is the difference between `sorted(list)` vs `list.sort()`?
...u have no choice.
No, you cannot retrieve the original positions. Once you called list.sort() the original order is gone.
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How exactly does a generator comprehension work?
...enexpr> at 0x7f2ad75f89e0>
>>> len(filtered_gen) # So technically, it has no length
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: object of type 'generator' has no len()
>>> # We extract each item out individually. We'll do it...
Useful example of a shutdown hook in Java?
...lly, .interrupt the working threads if they wait for data in some blocking call)
Wait for the working threads (executing writeBatch in your case) to finish, by calling the Thread.join() method on the working threads.
Terminate the program
Some sketchy code:
Add a static volatile boolean keepRunn...
Why is String.chars() a stream of ints in Java 8?
... and map it to an object via the lambda i -> (char)i, this will automatically box it into a Stream<Character>, and then we can do what we want, and still use method references as a plus.
Be aware though that you must do mapToObj, if you forget and use map, then nothing will complain, but y...
How do you convert a jQuery object into a string?
...r85461 That isn't a valid DOM node, though, so it would be wrong to try to call outerHTML on it to begin with. (Only a tiny subset of what can go in $(...) is a valid DOM node.)
– John Feminella
Feb 25 '15 at 17:50
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What's the false operator in C# good for?
...erride |, &, true and false in exactly the right way the compiler will call | and & when you write || and &&.
For example, look at this code (from http://ayende.com/blog/1574/nhibernate-criteria-api-operator-overloading - where I found out about this trick; archived version by @Bigg...
Node.js - use of module.exports as a constructor
...irst class citizens in JavaScript they to can act just like Objects (technically they are Objects). That said your question about using the new keywords has a simple answer: Yes. I'll illustrate...
Module exports
You can either use the exports variable provided to attach properties to it. Once req...
How do I connect to a specific Wi-Fi network in Android programmatically?
...networkId = wfMgr.addNetwork(wfc);
if (networkId != -1) {
// success, can call wfMgr.enableNetwork(networkId, true) to connect
}
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How do I limit the number of results returned from grep?
...rdless of
the presence of trailing context lines. This enables a calling
process to resume a search.
Note: grep stops reading the file once the specified number of matches have been found!
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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
...on state. It will skip a process if the process finishes before jobs -p is called. So if any of subprocess ends before jobs -p, that process's exit status will be lost.
– tkokoszka
Feb 8 '09 at 15:06
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