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Use of def, val, and var in scala
... ^
When the class is defined like:
scala> class Person(val name: String, var age: Int)
defined class Person
and then instantiated with:
scala> def personA = new Person("Tim", 25)
personA: Person
an immutable label is created for that specific instance of Person (i.e. 'personA'). Wh...
Jackson enum Serializing and DeSerializer
...rmat {
Weekday,
EvenOdd,
Interval;
private static Map<String, DeviceScheduleFormat> namesMap = new HashMap<String, DeviceScheduleFormat>(3);
static {
namesMap.put("weekday", Weekday);
namesMap.put("even-odd", EvenOdd);
namesMap.put("interval...
How to get current working directory in Java?
... .class file is in.
public class Test
{
public static void main(final String[] args)
{
final String dir = System.getProperty("user.dir");
System.out.println("current dir = " + dir);
}
}
if you are in /User/me/ and your .jar file containing the above code is in /opt/s...
How does delete[] “know” the size of the operand array?
... but to get the size myself in that same function I have to pass around an extra parameter. Does that make any sense?
– Mark Ruzon
Jun 11 '09 at 0:16
28
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What is the 
 character?
What's the meaning of this char?
6 Answers
6
...
Should I use past or present tense in git commit messages? [closed]
... improper tense/grammar because it's shorter. You'll probably only save 3 characters on average for a standard 50 character message. That being said, the present tense on average will probably be a few characters shorter.
You can name commits more consistently with titles of tickets in your issu...
How to amend several commits in Git to change author
...TES
the --no-edit flag makes sure the git commit --amend doesn't ask an extra confirmation
when you use git rebase -i, you can manually select the commits where to change the author,
the file you edit will look like this:
pick 897fe9e simplify code a little
pick abb60f9 add new feature
exec g...
How can I tell PyCharm what type a parameter is expected to be?
...tracts types from @param style comments.
See also reStructuredText and docstring conventions (PEP 257).
Another option is Python 3 annotations.
Please refer to the PyCharm documentation section for more details and samples.
...
Run batch file as a Windows service
...
No need for extra software. Use the task scheduler -> create task -> hidden. The checkbox for hidden is in the bottom left corner. Set the task to trigger on login (or whatever condition you like) and choose the task in the actions...
Can you call Directory.GetFiles() with multiple filters?
...at you understand the implications though: this will return all files in a string array and then filter that by the extensions you specify. That might not be a big issue if "C:\Path" doesn't have lot of files underneath it, but may be a memory/performance issue on "C:\" or something like that.
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