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How can I pair socks from a pile efficiently?
Yesterday I was pairing the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average.
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Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
Win32汇编--使用MASM使用MASMWin32汇编源程序的结构任何种类的语言，总是有基本的源程序结构规范。下面以经典的Hello World程序为例，展示一个C语言、DOS汇编...使用MASM
Win32汇编源程序的结构
任何种类的语言，总是有基本的源程...
How to calculate a time difference in C++
...ow(); }
double elapsed() const {
return std::chrono::duration_cast<second_>
(clock_::now() - beg_).count(); }
private:
typedef std::chrono::high_resolution_clock clock_;
typedef std::chrono::duration<double, std::ratio<1> > second_;
std::chrono...
How do I add the contents of an iterable to a set?
... 150000))
def one_by_one(s, l):
for i in l:
s.add(i)
def cast_to_list_and_back(s, l):
s = set(list(s) + l)
def update_set(s,l):
s.update(l)
results are:
one_by_one 10.184448844986036
cast_to_list_and_back 7.969255169969983
update_set 2.212590195937082
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Odd behavior when Java converts int to byte?
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often in books you will find the explanation of casting from int to byte as being performed by modulus division. this is not strictly correct as shown below
what actually happens is the 24 most significant bits from the binary value of the int number are discarded leaving ...
Get OS-level system information
...get process CPU usage (without writing your own JNI code), but you need to cast the java.lang.management.OperatingSystemMXBean to a com.sun.management.OperatingSystemMXBean. This works on Windows and Linux, I haven't tested it elsewhere.
For example ... call the get getCpuUsage() method more freque...
Notification passes old Intent Extras
i am creating a notification inside a BroadcastReceiver via this code:
6 Answers
6
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How to change the type of a field?
...uble) to 2 (string).
So simply load the document from the DB, perform the cast (new String(x)) and then save the document again.
If you need to do this programmatically and entirely from the shell, you can use the find(...).forEach(function(x) {}) syntax.
In response to the second comment below...
How can I read a large text file line by line using Java?
...using forEach(). The strange code (Iterable<String>) lines::iterator casts a Stream to an Iterable.
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How to remove illegal characters from path and filenames?
...he illegal path char list and has a few more. Here are lists of both lists cast to int: 34,60,62,124,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,58,42,63,92,47 34,60,62,124,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31...