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Is there any difference between GROUP BY and DISTINCT
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26 Answers
26
Active
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How to change default timezone for Active Record in Rails?
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203
I have decided to compile this answer because all others seem to be incomplete.
config.act...
Running multiple AsyncTasks at the same time — not possible?
...in what version exactly they changed that.
UPDATE:
Here is what current (2012-01-27) API says on this:
When first introduced, AsyncTasks were executed serially on a single background thread. Starting with DONUT, this was changed to a pool of threads allowing multiple tasks to operate in parall...
How can I change the version of npm using nvm?
...ersions/node/[your-version]/lib/node_modules/npm.
I just installed node 4.2.2, which comes with npm 2.14.7, but I want to use npm 3. So I did:
cd ~/.nvm/versions/node/v4.2.2/lib
npm install npm
Easy!
And yes, this should work for any module, not just npm, that you want to be "global" for a spec...
python: how to identify if a variable is an array or a scalar
...nt to make a call to this function with a scalar 50 or an array [0, 10, 20, 30] . How can I identify within the function, what the length of NBins is? or said differently, if it is a scalar or a vector?
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Vim indent xml file
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answered Jan 29 '14 at 18:27
Jesse HoganJesse Hogan
2,48711 gold badge1212 silver badges1515 bronze badges
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Which is faster: Stack allocation or Heap allocation
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23 Answers
23
Active
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Change the URL in the browser without loading the new page using JavaScript
...: "bar" };
function change_my_url()
{
history.pushState(stateObj, "page 2", "bar.html");
}
var link = document.getElementById('click');
link.addEventListener('click', change_my_url, false);
</script>
and a href:
<a href="#" id='click'>Click to change url to bar.html</a>
I...
Declaring and initializing variables within Java switches
...he right in the local variable declaration statement.
In your case, case 2 is in the same block as case 1 and appears after it, even though case 1 will never execute... so the local variable is in scope and available for writing despite you logically never "executing" the declaration. (A declarati...