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When NOT to use yield (return) [duplicate]
There are several useful questions here on SO about the benefits of yield return . For example,
11 Answers
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How to remove a key from a Python dictionary?
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To delete a key regardless of whether it is in the dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my...
What is the difference between Java RMI and RPC?
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RPC is C based, and as such it has structured programming semantics, on the other side, RMI is a Java based technology and it's object oriented.
With RPC you can just call remote functions exported into a server, in RMI you can have references to remot...
read file from assets
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Here is what I do in an activity for buffered reading extend/modify to match your needs
BufferedReader reader = null;
try {
reader = new BufferedReader(
new InputStreamReader(getAssets().open("filename.txt")));
// do reading, usually lo...
Format date in a specific timezone
...HH:mm')
The older .zone() as a setter was deprecated in Moment.js 2.9.0. It accepted a string containing a timezone identifier (e.g., "-0400" or "-04:00" for -4 hours) or a number representing minutes behind UTC (e.g., 240 for New York during DST).
// always "2013-05-23 00:55"
moment(136926693431...
The modulo operation on negative numbers in Python
...) / 4 = -1.25 --> floor(-1.25) = -2
(-5) % 4 = (-2 × 4 + 3) % 4 = 3.
It is chosen over the C behavior because a nonnegative result is often more useful. An example is to compute week days. If today is Tuesday (day #2), what is the week day N days before? In Python we can compute with
return (2...
Completion block for popViewController
...t offer any options for this. However by using the CoreAnimation framework it's possible to add a completion block to the underlying animation:
[CATransaction begin];
[CATransaction setCompletionBlock:^{
// handle completion here
}];
[self.navigationController popViewControllerAnimated:YES];
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Set type for function parameters?
...nswered Dec 6 '11 at 22:16
pronvitpronvit
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Rails :include vs. :joins
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It appears that the :include functionality was changed with Rails 2.1. Rails used to do the join in all cases, but for performance reasons it was changed to use multiple queries in some circumstances. This blog post by Fabi...
ProcessBuilder: Forwarding stdout and stderr of started processes without blocking the main thread
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To only way in Java 6 or earlier is with a so called StreamGobbler (which you are started to create):
StreamGobbler errorGobbler = new StreamGobbler(p.getErrorStream(), "ERROR");
// any output?
StreamGobbler outputGobbler = new StreamGobbler(p.getInputStream()...