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BigDecimal setScale and round
...lluded to but not directly addressed is the difference between "precision" and "scale" and how they are used in the two statements. "precision" is the total number of significant digits in a number. "scale" is the number of digits to the right of the decimal point.
The MathContext constructor onl...
How SignalR works internally?
...connection. It gives you two programming models over that connection (hubs and persistent connections). SignalR has a concept of transports, each transport decides how data is sent/received and how it connects and disconnects.
SignalR has a few built in transports:
WebSockets
Server Sent Events
F...
Execute AsyncTask several times
In my Activity I use a class which extends from AsyncTask and a parameter which is an instance of that AsyncTask. When I call mInstanceOfAT.execute("") everything is fine.
But the app crash when I press an update button which calls again the AsyncTask(In case the network job didnt work). Cause the...
Do git tags get pushed as well?
...ectory all the tags are present, but when I logon to the
remote repository and do a git tag , only the first few show up.
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Convert two lists into a dictionary
...onary)
{'a': 1, 'b': 2, 'c': 3}
Voila :-) The pairwise dict constructor and zip function are awesomely useful: https://docs.python.org/3/library/functions.html#func-dict
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How to change Xcode Project name
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Be careful, I found this changed the sizes of images and a lot of textures could not be sourced, undid the change and followed the answer below: change Bundle Display name
– dancingbush
Dec 6 '14 at 17:09
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Polymorphism with gson
... problem deserializing a json string with Gson.
I receive an array of commands. The command can be start, stop , some other type of command. Naturally I have polymorphism, and start/stop command inherit from command.
...
How to size an Android view based on its parent's dimensions
... layout. For example I have a RelativeLayout that fills the full screen, and I want a child view, say an ImageView , to take up the whole height, and 1/2 the width?
...
How do I test if a variable is a number in Bash?
... the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
...or, to handle numbers with a sign:
^[+-]?[0-9]+([.][0-9]+)?$
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Difference between save and saveAndFlush in Spring data jpa
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On saveAndFlush, changes will be flushed to DB immediately in this command. With save, this is not necessarily true, and might stay just in memory, until flush or commit commands are issued.
But be aware, that even if you flush th...