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What GRANT USAGE ON SCHEMA exactly do?
...user, and they affected the "postgres" database. I thought that if you run psql without -d db you're operating "outside" any db, but you're always connected to a db and by default you're connected to the db with the same name of your role. db = role = user = group... it's a bit confusing :D
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How to read a large file - line by line?
.... I use something like 1000+ partial files commonly. Doing these tricks helps immensely with processing speed and memory limits.
The pandas dataframe.read_csv is single threaded so you can do these tricks to make pandas quite faster by running a map() for parallel execution. You can use htop to ...
What is the difference D3 datum vs. data?
...nd datum within an array (["a"] in the example above).
Hopefully this helps clarify how selection.data and selection.datum() differ from each other both when providing data as an input argument and when querying for the bound datum by not providing any input arguments.
PS - The best way to unders...
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Optional Parameters with C++ Macros
... <code for four arguments>
// The interim macro that simply strips the excess and ends up with the required macro
#define XXX_X(x,A,B,C,D,FUNC, ...) FUNC
// The macro that the programmer uses
#define XXX(...) XXX_X(,##__VA_ARGS__,\
...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...andard library on Windows, but you can create a portable interface that wraps the standard library on other platforms and converts from UTF-8 to wchar_t directly before using Win32 W functions.
– bames53
Jun 25 '12 at 15:56
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How can I get a count of the total number of digits in a number?
...;
sw1.Stop();
Console.WriteLine($"IfChain: {sw1.ElapsedMilliseconds} ms");
Stopwatch sw2 = new Stopwatch();
sw2.Start();
for (int i = 0; i < size; ++i) samples[i].Digits_Log10();
sw2.Stop();
Console.WriteLine($"L...
How does SSL really work?
...
HTTPS is combination of HTTP and SSL(Secure Socket Layer) to provide encrypted communication between client (browser) and web server (application is hosted here).
Why is it needed?
HTTPS encrypts data that is transmitted from ...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
...ndows
I could share it even more places:
- Windows Phone 7
- Wii
- XBox
- PS3
- etc.
The biggie is iOS since MonoTouch works fantastically. I do not know of any good way to target iOS with Java. You cannot target Windows Phone 7 with Java, so I would say that the days of Java being better for mobi...
Draw in Canvas by finger, Android
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i add the first one in eclipse , add a java class called DrawingView in main class add onCreate function , but mPaint define in MainActivity and DrawingView called it . is what iam do by separate classes is right ?
– Sameer H. Ib...