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java : convert float to String and String to float
...just need to change the decimal point in the required form.
public class TestStandAlone {
/**
* This method is to main
* @param args void
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
Float f1=152.32f;
...
What is the difference between a var and val definition in Scala?
...t) {
var value = n
}
class B(n: Int) {
val value = new A(n)
}
object Test {
def main(args: Array[String]) {
val x = new B(5)
x = new B(6) // Doesn't work, because I can't replace the object created on the line above with this new one.
x.value = new A(6) // Doesn't work, because I...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
... is not a viable solution, for all other things I use MySQL (or SQLite for testing).
If you need a NoSQL db you usually know about it, possible reasons are:
client wants 99.999% availability on
a high traffic site.
your data makes
no sense in SQL, you find yourself
doing multiple JOIN queries for...
Version vs build in Xcode
...thFormat:@"Version: %@ (%@)", appVersionString, appBuildString];
This is tested with Xcode Version 4.6.3 (4H1503). The build number is often written in parenthesis / braces. The build number is in hexadecimal or decimal.
In Xcode you can auto-increment the build number as a decimal number by ...
Why are regular expressions so controversial? [closed]
...id input, it's to fail to match invalid input. Techniques to do "negative tests" for regular expressions are not very advanced, or at least not widely used.
This goes to the point of regular expressions being hard to read. Just by looking at a regular expression, it takes a lot of concentration to ...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
... When can argv[0] have null?
empty: Can argv[0] contain an empty string?
Tested on Ubuntu 16.10.
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How do I change the root directory of an apache server? [closed]
...x". The result is /etc/apache2/sites-available/000-default.conf. I haven't tested this out, but it may help some folks.
– Nick
Sep 26 '14 at 12:23
...
What is the list of valid @SuppressWarnings warning names in Java?
... a nonexistent path in environment paths (such as classpath).
The latest available javac (1.6.0_13) for mac have the following supported warnings
all
cast
deprecation
divzero
empty
unchecked
fallthrough
path
serial
finally
overrides
...
Vertically align text to top within a UILabel
... number of lines.
CGSize maximumSize = CGSizeMake(300, 9999);
NSString *dateString = @"The date today is January 1st, 1999";
UIFont *dateFont = [UIFont fontWithName:@"Helvetica" size:14];
CGSize dateStringSize = [dateString sizeWithFont:dateFont
constrainedToSize:maximumSize
lineB...
Window appears off screen on ubuntu [closed]
...picker? Moving that into focus should do the trick? Unfortunately, I can't test it ritght now...
– Georg Jung
Jun 7 '18 at 11:07
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