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How to create a new branch from a tag?
...
If this doesn't work because of "<tag> is not a valid commit" or a similar error (often when working on a shared repository), refer to stackoverflow.com/questions/35979642/…
– SalmonKiller
Nov 9 '18 at...
What is the difference between single and double quotes in SQL?
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Single quotes are used to indicate the beginning and end of a string in SQL. Double quotes generally aren't used in SQL, but that can vary from database to database.
Stick to using single quotes.
That's the primary use anyway. You can use single quotes...
isset() and empty() - what to use
...mpty';
}
?>
For example:
$var = "";
if(empty($var)) // true because "" is considered empty
{...}
if(isset($var)) //true because var is set
{...}
if(empty($otherVar)) //true because $otherVar is null
{...}
if(isset($otherVar)) //false because $otherVar is not set
{...}
...
Is an HTTPS query string secure?
...])
Password will be stored in server logs (which is obviously bad)
History caches in browsers
Therefore, even though Querystring is secured it's not recommended to transfer sensitive data over querystring.
[1] Although I need to note that RFC states that browser should not send referrers from HT...
Rails 4: List of available datatypes
Where can I find a list of data types that can be used in Ruby on Rails 4?
Such as
5 Answers
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Are C# events synchronous?
...Here's what I did. The program I used:
public class Foo
{
// cool, it can return a value! which value it returns if there're multiple
// subscribers? answer (by trying): the last subscriber.
public event Func<int, string> OnCall;
private int val = 1;
public void Do()
...
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? [dupli
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When I called Integer.toHexString((byte)0xff) it returned "ffffffff" because of sign extension. So one might need to take the last two characters of the returned string.
– Marvo
Jul 27 '12 at ...
Is it safe to assume a GUID will always be unique?
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Yes, you can. Since GUIDs are 128 bits long, there is admittedly a minute possibility of a clash—but the word "minute" is nowhere near strong enough. There are so many GUIDs that if you generate several trillion of them randomly, ...
notifyDataSetChanged example
I'm trying to use in my Android Application the notifyDataSetChanged() method for an ArrayAdapter but it doesn't work for me.
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How can I do division with variables in a Linux shell?
...ds in my shell as below, it returns an expr: non-integer argument error. Can someone please explain this to me?
6 Answers...