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round up to 2 decimal places in java? [duplicate]
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BigDecimal a = new BigDecimal("123.13698");
BigDecimal roundOff = a.setScale(2, BigDecimal.ROUND_HALF_EVEN);
System.out.println(roundOff);
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Why use def main()? [duplicate]
I've seen some code samples and tutorials that use
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How to read a text file into a string variable and strip newlines?
I use the following code segment to read a file in python:
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Regex for numbers only
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How about a set number of numeric values? This is usually so for postal codes of certain countries like India. I guess we may have to do a string length check after this?
– Najeeb
Mar 13 '18 at 10:5...
Repository Pattern Step by Step Explanation [closed]
...make changes to your data access
You have a single place responsible for a set of tables (usually)
It is easy to replace a repository with a fake implementation for testing - so you don't need to have a database available to your unit tests
There are other benefits too, for example, if you were us...
Differences between action and actionListener
...ok before the real business action get executed, e.g. to log it, and/or to set an additional property (by <f:setPropertyActionListener>), and/or to have access to the component which invoked the action (which is available by ActionEvent argument). So, purely for preparing purposes before the r...
Check empty string in Swift?
In Objective C, one could do the following to check for strings:
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Generating random number between 1 and 10 in Bash Shell Script [duplicate]
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The % 10 reduces the result to a set of ranges from 0-9. However, the very top set only has a range of 0-7. Thus, there are two fewer draws for 8 & 9 than 0-7. The + 1 translates this to a bias against 9 & 10. This would be a major flaw in securi...
How to check for changes on remote (origin) Git repository?
... the tracking information between local branch and origin:
# git branch --set-upstream-to=origin/<branch> <branch>
For master branch:
git branch --set-upstream-to=origin/master master
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Limitations of SQL Server Express
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When SQL Express is idle it aggressively trims back the working memory set by writing the cached data back to disk and releasing the memory.
But this is easily worked around: Is there a way to stop SQL Express 2008 from Idling?
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