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How do I use LINQ Contains(string[]) instead of Contains(string)
...tion is "leaky", you sometimes need to know which variant you are using in order to construct the query properly. As written this would work for LINQ to objects (and may be LINQ to SQL). For EF, you'd do it the other way around and construct the collection in memory as List<int> instead and s...
How are multi-dimensional arrays formatted in memory?
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Locking a file in Python
.../ DOS systems.
try:
# Posix based file locking (Linux, Ubuntu, MacOS, etc.)
import fcntl, os
def lock_file(f):
fcntl.lockf(f, fcntl.LOCK_EX)
def unlock_file(f):
fcntl.lockf(f, fcntl.LOCK_UN)
except ModuleNotFoundError:
# Windows file locking
import msvcrt, os...
Is there an easy way to return a string repeated X number of times?
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If you are getting -System.Linq.Enumerable etc as output, it's because you (ok, this was me) were too quick to copy/paste and modify the snippet. If you need to concat a different string onto the output of the Enumerable.Repeat, you need to do it like this: Console.W...
Git diff --name-only and copy that list
...swer.)
The -a parameter to rsync means to preserve permissions, ownership, etc. if possible. The -R means to use the full relative path when creating the files in the destination.
Update: if you have an old version of xargs, you'll need to use the -i option instead of -I. (The former is deprecat...
Can I use require(“path”).join to safely concatenate urls?
...bugs, fix them, write more tests, find an edge case where it doesn't work, etc., you could use this package.
url-join
https://github.com/jfromaniello/url-join
Install
npm install url-join
Usage
var urljoin = require('url-join');
var fullUrl = urljoin('http://www.google.com', 'a', '/b/cd', '?f...
PHP session lost after redirect
...o check the knowledge base of your hosting provider (also try their forums etc). For companies like FatCow and iPage, they require you to specify session_save_path. So like this:
session_save_path('"your home directory path"/cgi-bin/tmp');
session_start();
(replace "your home directory path" with...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
...e item there is a code: 966-347Z"
You have to provide other examples, in order to better describe what is a match and what is not a desired match:
--i.e:
"My phone is +39-128-3905 , and the phone product id is 966-347Z" -> "966-347Z"
The phone number is not a product id, this may be an impor...
Where's my JSON data in my incoming Django request?
...to process non-conventional form data such as XML payloads, binary images, etc.
Django documentation on the issue.
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Java: Detect duplicates in ArrayList?
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If your elements are somehow Comparable (the fact that the order has any real meaning is indifferent -- it just needs to be consistent with your definition of equality), the fastest duplicate removal solution is going to sort the list ( 0(n log(n)) ) then to do a single pass and look...