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When and why are database joins expensive?
... on you) and are indignantly setting hand to keyboard to tell me that you know for a fact that denormalisation is faster, sorry but you're living in one of the special cases - specifically, the case where you process all of the data, in-order. It's not a general case, and you are justified in your s...
Compiled vs. Interpreted Languages
...ler (gcj) and an interpeter for a superset of Java (bsh). So what is Java now? Bytecode-compiled, native-compiled or interpreted?
Other languages, which are compiled as well as interpreted, are Scala, Haskell or Ocaml. Each of these languages has an interactive interpreter, as well as a compile...
Removing event listener which was added with bind
...s number one hit and it didn't have a proper solution till you posted this now.
– Blargh
Apr 16 '14 at 19:24
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Twitter Bootstrap vs jQuery UI? [closed]
... basic page enhancements. Button and input styling and modal dialog boxes. Now I've come across Bootstrap and it looks pretty good.
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Design Pattern for Undo Engine
... object, execute redo operation on undo object to modify the document".
Now, admittedly, many people are thinking to themselves "Well duh, isn't part of the point of the command pattern?" Yes, but I've seen too many command systems that have two sets of commands, one for immediate operations and...
Access denied for user 'root@localhost' (using password:NO)
..._safe]
[root ~]# kill -KILL [PID of mysqld]
[root ~]# service mysql start
Now you can successfully login as root user with the password you set
[root ~]# mysql -u root -pYourNewPassword
mysql>
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PATH issue with pytest 'ImportError: No module named YadaYadaYada'
...ule path even if a module is in the same folder as the file run. I didn't know that this is considered best practice, so that's a useful bit of information, thanks. I agree with most of pep8, although it is still not perfect.
– Zelphir Kaltstahl
Nov 6 '16 at 19...
When do you use varargs in Java?
I'm afraid of varargs. I don't know what to use them for.
8 Answers
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How to turn off INFO logging in Spark?
...lution is for PySpark. Sorry that wasn't made clear - I'll edit the answer now.
– Galen Long
Mar 14 '19 at 20:27
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Catch All Bugs with BugTrap! - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术
...ntation, setup (github)
What's new in this version?
64 bit support - now BugTrap natively supports Win64
Multi-monitor support - BugTrap may capture screenshots from several monitors
Other enhancements - Tons of features/options added since last update. See app history for details
Intro...