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Comet implementation for ASP.NET? [closed]
...up to 20,000 concurrent client connections per server node, but individual tests have seen it go as high as 50,000. Message throughput is optimal around the 1,000-5,000 concurrent clients mark, with messages delivered as high as 300,000 per second from a single node.
It includes client-side support...
A semantics for Bash scripts?
...in/[ exists on many systems.
$ if '/bin/[' -f '/bin/['; then echo t; fi # Tested as-is on OS X, without the `]`
t
wat?
This makes a lot more sense if you look at how a shell is implemented. Here's an implementation I did as an exercise. It's in Python, but I hope that's not a hangup for anyone. ...
The 3 different equals
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My test was to tell programmers that if they're choosing === for performance reasons, they're wrong. So programmers are free to choose === or == based on logical reasons but not on performance reasons: there are different cases ...
How to check what user php is running as?
...
Kind of backward way, but without exec/system:
file_put_contents("testFile", "test");
$user = fileowner("testFile");
unlink("testFile");
If you create a file, the owner will be the PHP user.
This could also likely be run with any of the temporary file functions such as tempnam(), which c...
How to write log to file
...ed differently in the past, but this works for me:
f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.O...
grep a tab in UNIX
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awk works well here but in some tests on my machine with very large files it is about 30% slower than using grep -P. This might be trivial and irrelevant based on the use case, and awk may be better simply for readability and portability.
...
Java code for getting current time [duplicate]
...ent_time_str = time_formatter.format(System.currentTimeMillis());
//Log.i("test", "current_time_str:" + current_time_str);
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Delete files older than 15 days using PowerShell
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Thanks for this, esp including the 'WhatIf' switch for testing.
– JoelAZ
Jul 30 at 18:33
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Pretty Printing a pandas dataframe
...f you're not using Jupyter for some reason, e.g. you want to do some quick testing on the console, you can use the DataFrame.to_string method, which works from -- at least -- Pandas 0.12 (2014) onwards.
import pandas as pd
matrix = [(1, 23, 45), (789, 1, 23), (45, 678, 90)]
df = pd.DataFrame(matri...
How can I get the iOS 7 default blue color programmatically?
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@AndreyTarantsov from a quick test it seems to work fine. From the UIVIew documentation: "Manipulations to your application’s user interface must occur on the main thread. Thus, you should always call the methods of the UIView class from code running in...