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How can I calculate an md5 checksum of a directory?
...g on here, I can only see solutions that would make the command more complicated then it's worth.
PS: one of my systems uses a limited busybox find which does not support -exec nor -print0 flags, and also it appends '/' to denote directories, while findutils find doesn't seem to, so for this machi...
How to load/edit/run/save text files (.py) into an IPython notebook cell?
...you don't wont to use the notebook as a text editor ? (I mean : each modification in the cell won't change the .py file). By the way, I have no clue of a native way to insert a .py content in a cell, I always copy/paste my code when needed... sorry
– Raphaël Braud
...
String concatenation: concat() vs “+” operator
...Firstly, there's a slight difference in semantics. If a is null, then a.concat(b) throws a NullPointerException but a+=b will treat the original value of a as if it were null. Furthermore, the concat() method only accepts String values while the + operator will silently convert the argument to a Str...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
... 2012-03-28 20:43 uevent
Here the dev file contains this information:
# cat /sys/class/tty/ttyUSB0/dev
188:0
This is the major/minor node. These can be searched in the /dev directory to get user-friendly names:
# ll -R /dev |grep "188, *0"
crw-rw---- 1 root dialout 188, 0 2012-03-28 20:44 ...
Create a pointer to two-dimensional array
...itb, i'm sorry but this is wrong as your solution does not provide any allocation of storage for the array.
– Rob Wells
Jun 27 '09 at 18:11
2
...
Java - No enclosing instance of type Foo is accessible
... System.out.println("Dog checkup");
}
}
class Cat extends Animal {
@Override
void checkup() {
System.out.println("Cat Checkup");
}
}
}
share
|
...
How do I join two SQLite tables in my Android application?
... a.alternative
FROM tbl_question AS q, tbl_alternative AS a
WHERE q.categoryid = a.categoryid
AND q._id = a.questionid;
This is from memory so there may be some syntactic issues.
http://www.sqlite.org/lang_createview.html
I mention this approach because then you can use SQLiteQueryBui...
Finding current executable's path without /proc/self/exe
...But I'd like to know if there is a convenient way to find the current application's directory in C/C++ with cross-platform interfaces. I've seen some projects mucking around with argv[0], but it doesn't seem entirely reliable.
...
Efficiency of premature return in a function
...
There is no difference at all:
=====> cat test_return.cpp
extern void something();
extern void something2();
void test(bool b)
{
if(b)
{
something();
}
else
something2();
}
=====> cat test_return2.cpp
extern void something();
e...
Hidden Features of VB.NET?
...tional bRetry as Boolean = False)
Try
ssh.Connect(host, user, password)
Catch ex as TimeoutException When Not bRetry
''//Try again, but only once.
Login(host, user, password, True)
Catch ex as TimeoutException
''//Log exception
End Try
End Sub
...