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gubser / AsyncBoundedCache.fs
Last active January 31, 2019 19:46
A bounded cache for async operations in F#
module AsyncBoundedCache
open System
open System.Collections.Concurrent
open System.Threading
open System.Threading.Tasks
let startTime = DateTime.UtcNow.Ticks / 10000000L
let now () = int ((DateTime.UtcNow.Ticks / 10000000L) - startTime)
@gubser
gubser / AsyncBoundedCacheTests.fs
Created January 30, 2019 21:04
Unit tests for bounded caching. Needs more.
module AsyncBoundedCacheTests
open System
open Xunit
[<Fact>]
let ``insert items`` () = async {
let f = fun x -> async {
do! Async.Sleep(1)
return x
@gubser
gubser / space-delimited-int-array-column.py
Created January 30, 2019 10:03
This python snippet parses the `vector` column as a list of integers delimited by space and adds it as a new column
"""
| frame | which | center-x | center-y | vector | vector_array |
| 44 | 0 | 55.5 | 29.3 | "49 44 31 22 26 22 44 ..." | [49, 44, 31, 22, 26, 22, 44, ...] |
"""
import pandas as pd
df = pd.read_csv(r"C:\Users\egubser\Downloads\blobs.csv", sep=';')
df['vector_array'] = df.vector.apply(lambda v: [int(k) for k in v.split(' ')])
@gubser
gubser / text-symbol-halo.html
Created December 12, 2018 10:28
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>TextSymbol with Halo - 4.9</title>
<style>
html,
body,
#viewDiv {
@gubser
gubser / TaskResultBind.fs
Last active November 6, 2018 21:19
Helper function to chain TaskResult producing functions
type TaskResult<'a,'b> = Task<Result<'a,'b>>
module TaskResult =
let bind (f: 'a -> TaskResult<'b,'e>) (x: TaskResult<'a,'e>): TaskResult<'b,'e> = task {
match! x with
| Ok success -> return! f success
| Error failure -> return Error failure
}
// should it be called bindResult or bindTask?
@gubser
gubser / pathScanContext.fsx
Created October 11, 2018 13:36
A variant of pathScan that also passes HttpContext to the handler
#r "<path/to/Suave.dll>"
open Suave
open Suave.Successful
open Suave.RequestErrors
/// <summary>
/// Same as pathScan but also passes the HttpContext to the handler h.
/// See pathScan: https://github.com/SuaveIO/suave/blob/0524552a876526ae6623ba6fdf4ca3a06feaf510/src/Suave/Combinators.fs#L413
/// </summary>
let pathScanContext (pf : PrintfFormat<_,_,_,_,'t>) (h : HttpContext -> 't -> WebPart) : WebPart =
@gubser
gubser / AutoReloadConfig.py
Last active May 17, 2018 05:54
License: MIT
import json
import time
import logging
from collections import UserDict
class AutoReloadConfig(UserDict):
"""
A dictionary that automatically reloads itself from a file.
On each call to __getitem__(), check if config is older than reload_period and if yes then reload from file.
@gubser
gubser / preliminary pathspider analyisis.ipynb
Created June 9, 2016 10:59
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@gubser
gubser / The following generators are available on this platform: Unix Makefiles = Generates standard UNIX makefiles. Ninja = Generates build.ninja files (experimental). Watcom WMake = Generates Watcom W
Created March 5, 2016 08:32
The following generators are available on this platform:
Unix Makefiles = Generates standard UNIX makefiles.
Ninja = Generates build.ninja files (experimental).
Watcom WMake = Generates Watcom WMake makefiles.
CodeBlocks - Ninja = Generates CodeBlocks project files.
CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.
CodeLite - Ninja = Generates CodeLite project files.
CodeLite - Unix Makefiles = Generates CodeLite project files.
Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files.
Eclipse CDT4 - Unix Makefiles