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Java: getMinutes and getHours
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Try using Joda Time instead of standard java.util.Date classes. Joda Time library has much better API for handling dates.
DateTime dt = new DateTime(); // current time
int month = dt.getMonth(); // gets the current month
int hours = d...
Why is exception handling bad?
...xceptions mean is that any one of your statements can interrupt you at any time. The onus is on you in each individual method to get it right and roll back when that happens, or order your operations so throws don't effect object state. If you get it wrong (and it's easy to make this kind of mista...
“f” after number
..., the compiler may not be smart enough to convert them to float at compile time, and would slow the execution down with four int->float conversions (that are among the slowest casts). Although in this case is almost unimportant, it's always better to specify correctly f if needed: in an expressio...
Multiple line code example in Javadoc comment
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I had a really tough time with including a specific code example in a javadoc comment. I'd like to share this one.
Please note the following:
usage of old <code> - tag to prevent the curly brackets from being interpreted
usage of "new" {@...
Check if a row exists, otherwise insert
...You should try and factor your SQL to hold locks for the shortest possible time by committing the transaction as soon as possible (acquire late, release early).
Note that row-level locks may be less effective if your PK is a bigint, as the internal hashing on SQL Server is degenerate for 64-bit val...
Adding n hours to a date in Java?
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Check Calendar class. It has add method (and some others) to allow time manipulation. Something like this should work.
Calendar cal = Calendar.getInstance(); // creates calendar
cal.setTime(new Date()); // sets calendar time/date
cal.add(Calendar.HOUR_OF_DAY, 1); // adds one hou...
iPhone App Icons - Exact Radius?
...at least as displayed by Photoshop at 3200% zoom). The Round Rect Tool sometimes rounds the input to the nearest whole number, but you can see a significant difference between 90 and 89.825. And several times the Round Rectangle Tool didn't round up and actually showed multiple digits after the deci...
How do I find a stored procedure containing ?
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A million times what @PeteT said. This 4000 character limit really bit me a few years ago.
– Vivian River
Mar 31 '15 at 17:40
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Include another HTML file in a HTML file
...n use sed on the command line - I don't want to have to rely on that every time I change the contents of the template.
– jbyrd
Dec 8 '16 at 19:18
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Parsing HTML using Python
...utifulSoup took 1.7 sec, but applying lxml instead, boosted it nearly *100 times FASTER! If care about performance, lxml is the best option
– Alex-Bogdanov
May 29 at 15:52
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