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What is an efficient way to implement a singleton pattern in Java? [closed]
...pt that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is the bes...
Vim - how to run a command immediately when starting vim?
...o early, check :h startup:
At startup, Vim checks environment variables and files and sets values
accordingly. Vim proceeds in this order:
1. Set the 'shell' and 'term' option *SHELL* *COMSPEC* *TERM*
2. Process the arguments
3. Execute Ex commands, from environment variables and...
Why does the default parameterless constructor go away when you create one with parameters
In C#, C++ and Java, when you create a constructor taking parameters, the default parameterless one goes away. I have always just accepted this fact, but now I've started wondering why.
...
Why does JavaScript only work after opening developer tools in IE once?
...anks! I'd say it's a bug since you should have the same conditions to test and debug your website with the console open and close.
– Chnoch
Mar 6 '15 at 11:35
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How do I get the RootViewController from a pushed controller?
...[viewControllers objectAtIndex:viewControllers.count - 2];
This is the standard way of getting the "back" view controller. The reason objectAtIndex:0 works is because the view controller you're trying to access is also the root one, if you were deeper in the navigation, the back view would not be ...
What is the best way to solve an Objective-C namespace collision?
...uld prefix them with "IBM"; if you work for Microsoft, you could use "MS"; and so on. Sometimes the initials refer to the project, e.g. Adium prefixes classes with "AI" (as there is no company behind it of that you could take the initials). Apple prefixes classes with NS and says this prefix is rese...
Is There a Better Way of Checking Nil or Length == 0 of a String in Ruby?
...riation using strip can be quite inefficient.
– Marc-André Lafortune
May 2 '13 at 13:26
10
anoth...
Could not find an implementation of the query pattern
...ate a database connection using LINQ.
First I add a new LINQ to SQL class, and drag my table called "tblPersoon" into it.
9...
IntelliJ IDEA way of editing multiple lines
I've seen this done in TextMate and I was wondering if there's a way to do it in IDEA.
20 Answers
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How to write a multidimensional array to a text file?
... read back in with numpy.loadtxt. Therefore, we can be a bit more verbose, and differentiate the slices using commented out lines. By default, numpy.loadtxt will ignore any lines that start with # (or whichever character is specified by the comments kwarg). (This looks more verbose than it actually...