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Structs versus classes
...ass, maybe struct. As a rule of thumb:
If the object is :
1. Small
2. Logically an immutable value
3. There's a lot of them
Then I'd consider making it a struct. Otherwise I'd stick with a reference type.
If you need to mutate some field of a struct it is usually better to build a constructor that...
how to run two commands in sudo?
... any way how I can run two Db2 commands from a command line? (They will be called from a PHP exec command.)
10 Answers
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Detect if called through require or directly by command line
How can I detect whether my Node.JS file was called using SH: node path-to-file or JS: require('path-to-file') ?
5 Answers...
Breaking/exit nested for in vb.net
...@ysap - In my experience, its rare to need multiple boolean variables. Typically, there is a single exit condition (e.g. "done") that once it is encountered, all loop levels should be exited. Nevertheless, I prefer making a separate method, and using "Return" - this cleanly encapsulates the nested c...
Gson: How to exclude specific fields from Serialization without annotations
...e().equals(fieldName));
}
}
Here is how we can use it generically.
Gson gson = new GsonBuilder()
.setExclusionStrategies(new TestExclStrat("in.naishe.test.Country.name"))
//.serializeNulls()
.create();
Student src = new Student();
String json = gso...
Inheritance and Overriding __init__ in python
...
The book is a bit dated with respect to subclass-superclass calling. It's also a little dated with respect to subclassing built-in classes.
It looks like this nowadays:
class FileInfo(dict):
"""store file metadata"""
def __init__(self, filename=None):
super(FileInfo...
How to use ConcurrentLinkedQueue?
...ent collections are synchronized for you. In other words, each individual call to the queue is guaranteed thread-safe without any action on your part. What is not guaranteed thread-safe are any operations you perform on the collection that are non-atomic.
For example, this is threadsafe without a...
How to scroll to top of long ScrollView layout?
...S_UP) from the other answer didn't work.
Only thing that worked for me was calling scroll_view.smoothScrollTo(0,0) right after the dialog is shown.
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How to install mongoDB on windows?
...rocess in Windows
Are you ready for the installation … and use …
Technically, it’s not an installation it’s just Downloading…
I. Download the zip file http://www.mongodb.org/downloads
II. Extract it and copy the files into your desired location.
III. Start the DB engine.
IV. Test the i...
How to check if two arrays are equal with JavaScript? [duplicate]
...de
// the array, you should sort both arrays here.
// Please note that calling sort on an array will modify that array.
// you might want to clone your array first.
for (var i = 0; i < a.length; ++i) {
if (a[i] !== b[i]) return false;
}
return true;
}
...