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Pass ruby script file to rails console
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script/console --irb=pry < test.rb > test.log
simple, dirty, and block the process at the end, but it does the job exactly like I wanted.
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NULL values inside NOT IN clause
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@binki, You query executes if run here rextester.com/l/sql_server_online_compiler but does not work if run here sqlcourse.com/cgi-bin/interpreter.cgi.
– Istiaque Ahmed
Nov 10 '17 at 13:57
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How can I detect if a selector returns null?
...answer, but it would be helpful if you explain what happens if NONE of the tested elements exists. Short answer: TypeError: firstExistingElement.doSomething is not a function. You can wrap the entire variable assignment/test in an if() and only do something if an element is found....
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Skip List vs. Binary Search Tree
... locked.
Update from Jon Harrops comments
I read Fraser and Harris's latest paper Concurrent programming without locks. Really good stuff if you're interested in lock-free data structures. The paper focuses on Transactional Memory and a theoretical operation multiword-compare-and-swap MCAS. B...
For..In loops in JavaScript - key value pairs
...ly or with Babel (js compiler) then you could do the following:
const test = {a: 1, b: 2, c: 3};
for (const [key, value] of Object.entries(test)) {
console.log(key, value);
}
Which will print out this output:
a 1
b 2
c 3
The Object.entries() method returns an array of a given o...
Android 4.3 Bluetooth Low Energy unstable
...am currently developing an application that will use Bluetooth Low Energy (testing on the Nexus 4). After getting started with the official BLE APIs in Android 4.3, I have noticed that after I connect a device for the first time I am rarely able to successfully connect to / communicate with that dev...
Controlling mouse with Python
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Tested on WinXP, Python 2.6 (3.x also tested) after installing pywin32 (pywin32-214.win32-py2.6.exe in my case):
import win32api, win32con
def click(x,y):
win32api.SetCursorPos((x,y))
win32api.mouse_event(win32con.MO...
Which browsers support ?
...here: http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
Also, to test if a browser supports the new dynamic async property behavior: http://test.getify.com/test-async/
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Check list of words in another string [duplicate]
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If your list of words is of substantial length, and you need to do this test many times, it may be worth converting the list to a set and using set intersection to test (with the added benefit that you wil get the actual words that are in both lists):
>>> long_word_list = 'some one long...
How to remove the arrow from a select element in Firefox
...uch help, I thought it was about time I give something back.
I have only tested it in firefox (mac) version 18, and then 22 (after I updated).
All feedback is welcome.
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