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MAC addresses in JavaScript
...
I concur with all the previous answers that it would be a privacy/security vulnerability if you would be able to do this directly from Javascript. There are two things I can think of:
Using Java (with a signed applet)
Using signed Javasc...
Base64 encoding in SQL Server 2005 T-SQL
...coding
FROM (
SELECT CAST('TestData' AS VARBINARY(MAX)) AS bin
) AS bin_sql_server_temp;
-- Decode the Base64-encoded string "VGVzdERhdGE=" to get back "TestData"
SELECT
CAST(
CAST(N'' AS XML).value(
'xs:base64Binary("VGVzdERhdGE=")'
, 'VARBINARY(MAX)'
...
What are the most-used vim commands/keypresses?
...rouble wading through the gargantuan lists of things you can do in VIM and all of the keypresses for them. I'm tired of hearing "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' for appending text at the end of the line, or…" I can't imagine everyone uses a...
Access-Control-Allow-Origin Multiple Origin Domains?
Is there a way to allow multiple cross-domains using the Access-Control-Allow-Origin header?
31 Answers
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How to use a filter in a controller?
...Prashanth is correct, but there is even easier way of doing the same. Basically instead of injecting the $filter dependency and using awkward syntax of invoking it ($filter('filtername')(arg1,arg2);) one can inject dependency being: filter name plus the Filter suffix.
Taking example from the quest...
Selenium c# Webdriver: Wait Until Element is Present
...at can cause some unpredictable behavior leading to bad test results. Generally speaking, I would recommend using explicit waits over implicit waits.
– mrfreester
Dec 22 '16 at 19:26
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How to check for a valid Base64 encoded string
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calling base64String.Contains multiple times may result in poor performance incase of base64String being a large string.
– NucS
Jul 23 '15 at 11:46
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Reading a plain text file in Java
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I'd also recommend you download and read this wonderful (yet free) book called Thinking In Java
In Java 7:
new String(Files.readAllBytes(...))
(docs)
or
Files.readAllLines(...)
(docs)
In Java 8:
Files.lines(..).forEach(...)
(docs)
...
PostgreSQL naming conventions
.... Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase or PascalCase (or UPPER...
How do you set, clear, and toggle a single bit?
... behaviour to shift by more than the width of a long. The same applies to all the rest of the examples.
Clearing a bit
Use the bitwise AND operator (&) to clear a bit.
number &= ~(1UL << n);
That will clear the nth bit of number. You must invert the bit string with the bitwise NOT op...