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How to properly seed random number generator
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Each time you set the same seed, you get the same sequence. So of course if you're setting the seed to the time in a fast loop, you'll probably call it with the same seed many times.
In your case, as you're calling your randInt f...
How do we control web page caching, across all browsers?
...e `response.Content.Headers.Expires` directly
// since it allows only `DateTimeOffset?` values.
response.Content?.Headers.TryAddWithoutValidation("Expires", 0.ToString());
Using ASP.NET:
Response.AppendHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1.
Response.AppendHe...
Python json.loads shows ValueError: Extra data
...ap them in a list, dump the list (instead of dumping dictionaries multiple times)
>>> dict1 = {}
>>> dict2 = {}
>>> json.dumps([dict1, dict2])
'[{}, {}]'
>>> json.loads(json.dumps([dict1, dict2]))
[{}, {}]
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How to generate keyboard events in Python?
...an be done using ctypes:
import ctypes
from ctypes import wintypes
import time
user32 = ctypes.WinDLL('user32', use_last_error=True)
INPUT_MOUSE = 0
INPUT_KEYBOARD = 1
INPUT_HARDWARE = 2
KEYEVENTF_EXTENDEDKEY = 0x0001
KEYEVENTF_KEYUP = 0x0002
KEYEVENTF_UNICODE = 0x0004
KEYEVENTF_SCA...
Running Command Line in Java [duplicate]
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Runtime rt = Runtime.getRuntime();
Process pr = rt.exec("java -jar map.jar time.rel test.txt debug");
http://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html
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Are Exceptions in C++ really slow
...ts) is the Zero-Cost model exceptions.
The idea is that instead of losing time by setting up a guard and explicitly checking for the presence of exceptions everywhere, the compiler generates a side table that maps any point that may throw an exception (Program Counter) to the a list of handlers. Wh...
How to initialize HashSet values by construction?
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There is a shorthand that I use that is not very time efficient, but fits on a single line:
Set<String> h = new HashSet<>(Arrays.asList("a", "b"));
Again, this is not time efficient since you are constructing an array, converting to a list and using that list...
Compare two List objects for equality, ignoring order [duplicate]
...> t))
Edit:
Here is a solution that performs a bit better (about ten times faster), and only requires IEquatable, not IComparable:
public static bool ScrambledEquals<T>(IEnumerable<T> list1, IEnumerable<T> list2) {
var cnt = new Dictionary<T, int>();
foreach (T s i...
Why can't I have “public static const string S = ”stuff"; in my Class?
...lly more flexible than Java's final for variables - you can set it as many times as you like in the constructor, but not elsewhere. That can be very handy.
– Jon Skeet
Jan 2 '09 at 23:01
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Get final URL after curl is redirected
...not what the question included and risk changing what the server does. Sometimes servers don't respond well to HEAD even when they respond fine to GET.
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