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java get file size efficiently
...sponse to rgrig's benchmark, the time taken to open/close the FileChannel & RandomAccessFile instances also needs to be taken into account, as these classes will open a stream for reading the file.
After modifying the benchmark, I got these results for 1 iterations on a 85MB file:
file totalT...
How to import a module given the full path?
...s things when importing more than one module from a single package. For example:
import sys
# the mock-0.3.1 dir contains testcase.py, testutils.py & mock.py
sys.path.append('/foo/bar/mock-0.3.1')
from testcase import TestCase
from testutils import RunTests
from mock import Mock, sentinel, pa...
How to use unicode characters in Windows command line?
...ions”).
AFAIK, CMD has perfect support for Unicode; you can enter/output all Unicode chars when any codepage is active.
Windows’ console has A LOT of support for Unicode — but it is not perfect (just “good enough”; see below).
chcp 65001 is very dangerous. Unless a program was speci...
Get free disk space
...DriveInfo drive in DriveInfo.GetDrives())
{
if (drive.IsReady && drive.Name == driveName)
{
return drive.TotalFreeSpace;
}
}
return -1;
}
good luck!
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...
How to use QueryPerformanceCounter?
... StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryPerformanceCounter(&li);
CounterStart = li.QuadPart;
}
double GetCounter()
{
LARGE_INTEGER li;
...
Where do I set my company name?
...rences/com.apple.Xcode.plist
The proper solution is to update your name & company name in Address Book.
Then you can try by creating any new Xcode project:
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...
Compiling problems: cannot find crt1.o
...bundle. I had to use strace (ie "strace gcc <all my arguments> 2>&1 | grep crt1.o") to see where gcc was looking for crt1.o, so I could figure out what symbolic link to create.
– Andrew Bainbridge
Dec 6 '16 at 11:56
...
Convert objective-c typedef to its string equivalent
...nerate a table of names yourself (or with some preprocessor abuse). For example:
// In a header file
typedef enum FormatType {
JSON,
XML,
Atom,
RSS
} FormatType;
extern NSString * const FormatType_toString[];
// In a source file
// initialize arrays with explicit indices to make ...
How to call Android contacts list?
...
I'm not 100% sure what your sample code is supposed to do, but the following snippet should help you 'call the contacts list function, pick a contact, then return to [your] app with the contact's name'.
There are three steps to this process.
1. Permiss...
How to write a scalable Tcp/Ip based server
...
public bool Send(byte[] message, xConnection conn)
{
if (conn != null && conn.socket.Connected)
{
lock (conn.socket)
{
//we use a blocking mode send, no async on the outgoing
//since this is primarily a multithreaded application, shouldn't cause problems to send in bloc...