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'printf' vs. 'cout' in C++
...<ctime>
class TimedSection {
char const *d_name;
timespec d_start;
public:
TimedSection(char const *name) :
d_name(name)
{
clock_gettime(CLOCK_REALTIME, &d_start);
}
~TimedSection() {
timespec end;
...
How to force maven update?
I imported my already working project on another computer and it started to download dependencies.
25 Answers
...
Multiprocessing vs Threading Python [duplicate]
...nthreads]
for thread_class, work_size in input_params:
start_time = time.time()
threads = []
for i in range(nthreads):
thread = thread_class(work_size)
threads.append(thread)
thread.start()
for i,...
Any way to write a Windows .bat file to kill processes? [closed]
...line per process you want to kill, save it as a .bat file, and add in your startup directory. Problem solved!
If this is a legacy system, PsKill will do the same.
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一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
.... .1.. = Next Expected Sequence Number: 1
.... ..10 = LLID: Start of an L2CAP message or a complete L2CAP message with no fragmentation (0x2)
000. .... = RFU: 0
...0 0111 = Length: 7
3) L2CAP 长度
在BLE中，GAP,GA...
How to check whether a file is empty or not?
...en at this point.. now what?
... my_file.seek(0) #ensure you're at the start of the file..
... first_char = my_file.read(1) #get the first character
... if not first_char:
... print "file is empty" #first character is the empty string..
... else:
... my_file.seek(0) #...
What is “lifting” in Haskell?
...e have liftFoo3, liftFoo4 and so on. However this is often not necessary.
Start with the observation
liftFoo1 :: (a -> b) -> Foo a -> Foo b
But that is exactly the same as fmap. So rather than liftFoo1 you would write
instance Functor Foo where
fmap f foo = ...
If you really want ...
How to highlight cell if value duplicate in same column for google spreadsheet?
...rn its content. In this case, the current cell's content. Then back to the start, COUNTIF() will test every cell in the range against ours, and return the count.
The last step is making our formula return a boolean, by making it a logical expression: COUNTIF(...) > 1. The > 1 is used because ...
Opening port 80 EC2 Amazon web services [closed]
... Also, check your firewall (as nsof stated). RHEL has iptables started by default. Windows has windows FW. Turn them off and see if that was the problem. If it was, then edit the firewall to allow 80/443 and restart
– Andrew Backer
Feb 28 '14 at ...
PHP parse/syntax errors; and how to solve them
...s.
Comment out offending code.
If you can't isolate the problem source, start to comment out (and thus temporarily remove) blocks of code.
As soon as you got rid of the parsing error, you have found the problem source. Look more closely there.
Sometimes you want to temporarily remove complete fun...