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How to get orientation-dependent height and width of the screen?
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You can use something like UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation) to determine the orientation and then use the dimensions accordingly.
HOWEVER, during an orientation change like in UIViewController's
- (void) willRotateToInterfa...
What is the difference between float and double?
...le has 2x the precision of float[1]. In general a double has 15 decimal digits of precision, while float has 7.
Here's how the number of digits are calculated:
double has 52 mantissa bits + 1 hidden bit: log(253)÷log(10) = 15.95 digits
float has 23 mantissa bits + 1 hidden bit: log(224)÷log(10) =...
Programmatically go back to the previous fragment in the backstack
Say I have an activity that has fragments added programmatically:
12 Answers
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Java compiler level does not match the version of the installed Java project facet
...ios Version, where my JRE Version is set to 1.6.
I have added Maven capabilities to the Web Application by clicking on Configure → Convert to Maven Project .
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Recover from git reset --hard?
Is there any way to recover uncommitted changes to the working directory from a git reset --hard HEAD ?
22 Answers
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Rank function in MySQL
...ding ANSI standard SQL query for my requirement. Please help me to convert it to MySQL .
11 Answers
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Java String to SHA1
...presentation using Base64. Apache Commons Codec API 1.4, has this nice utility to take away all the pain. refer here
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SQL Server indexes - ascending or descending, what difference does it make?
...I'm using version 2005), you can specify that the index on each column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be just as fast either way? What difference does it make which order I choose?
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How to escape single quotes within single quoted strings
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' Start third quotation, using single quotes.
If you do not place any whitespaces between (1) and (2), or between (4) and (5), the shell will interpret that string as a one long word.
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How to replace all dots in a string using JavaScript
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You need to escape the . because it has the meaning of "an arbitrary character" in a regular expression.
mystring = mystring.replace(/\./g,' ')
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