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What is the worst real-world macros/pre-processor abuse you've ever come across?
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From memory, it looked something like this:
#define RETURN(result) return (result);}
int myfunction1(args) {
int x = 0;
// do something
RETURN(x)
int myfunction2(args) {
int y = 0;
// do something
R...
Why does find -exec mv {} ./target/ + not work?
...to know exactly what {} \; and {} \+ and | xargs ... do. Please clarify these with explanations.
5 Answers
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how to ignore namespaces with XPath
My goal is to extract certain nodes from multiple xml files with multiple namespaces using XPath. Everything works fine as long as i know the namespace URIs. The namespace name itself remains constant, but the Schemas (XSD) are sometimes client-generated i.e. unknown to me. Then i am left with basic...
puts vs logger in rails rake tasks
In a rake task if I use puts command then I see the output on console. However I will not see that message in log file when app is deployed on production.
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How do I associate a Vagrant project directory with an existing VirtualBox VM?
Somehow my Vagrant project has disassociated itself from its VirtualBox VM, so that when I vagrant up Vagrant will import the base-box and create a new virtual machine.
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How can I add to List
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Sorry, but you can't.
The wildcard declaration of List<? extends Number> foo3 means that the variable foo3 can hold any value from a family of types (rather than any value of a specific type). It means that any of these are legal assignments:
List<? extends Numbe...
How do I size a UITextView to its content?
Is there a good way to adjust the size of a UITextView to conform to its content? Say for instance I have a UITextView that contains one line of text:
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How do you remove a specific revision in the git history?
... combine revision 3 and 4 into a single revision, you can use git rebase. If you want to remove the changes in revision 3, you need to use the edit command in the interactive rebase mode. If you want to combine the changes into a single revision, use squash.
I have successfully used this squash tec...
Sort a Map by values
I am relatively new to Java, and often find that I need to sort a Map<Key, Value> on the values.
58 Answers
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How to filter None's out of List[Option]?
If I have a List[Option[A]] in Scala, what is the idiomatic way to filter out the None values?
3 Answers
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