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MySQL error: key specification without a key length
... type such as VARCHAR and ENUM into TEXT or BLOB type, with the column already been defined as unique constraints or index. The Alter Table SQL command will fail.
The solution to the problem is to remove the TEXT or BLOB column from the index or unique constraint or set another field as primary key...
jQuery checkbox checked state changed event
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Bind to the change event instead of click. However, you will probably still need to check whether or not the checkbox is checked:
$(".checkbox").change(function() {
if(this.checked) {
//Do stuff
}
});
The main benefit of binding to the ...
jQuery Validation plugin: disable validation for specified submit buttons
I have a form with multiple fields that I'm validating (some with methods added for custom validation) with Jörn Zaeffere's excellent jQuery Validation plugin. How do you circumvent validation with specified submit controls (in other words, fire validation with some submit inputs, but do not fire v...
Transfer git repositories from GitLab to GitHub - can we, how to and pitfalls (if any)?
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You can transfer those (simply by adding a remote to a GitHub repo and by pushing them)
create an empty repo on GitHub
git remote add github https://yourLogin@github.com/yourLogin/yourRepoName.git
git push --mirror github
The history will be the same.
Bu...
+ operator for array in PHP?
...gt; bar // preserved from $array1 (left-hand array)
[2] => five // added from $array2 (right-hand array)
)
So the logic of + is equivalent to the following snippet:
$union = $array1;
foreach ($array2 as $key => $value) {
if (false === array_key_exists($key, $union)) {
$uni...
Python memory leaks [closed]
... module actually can have debug flags set. Look at the set_debug function. Additionally, look at this code by Gnibbler for determining the types of objects that have been created after a call.
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Strings are objects in Java, so why don't we use 'new' to create them?
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In addition to what was already said, String literals [ie, Strings like "abcd" but not like new String("abcd")] in Java are interned - this means that every time you refer to "abcd", you get a reference to a single String instan...
Can scripts be inserted with innerHTML?
I tried to load some scripts into a page using innerHTML on a <div> . It appears that the script loads into the DOM, but it is never executed (at least in Firefox and Chrome). Is there a way to have scripts execute when inserting them with innerHTML ?
...
How do I alias commands in git?
I saw a screencast where someone had gotten
22 Answers
22
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What's the difference between detaching a Fragment and removing it?
...Remove means the fragment instance cannot be re-attached. You will have to add it again to the fragment transaction.
Source Comment
You'll notice that when a Fragment is detached, its onPause, onStop and onDestroyView methods are called only (in that order). On the other hand, when a Fragment is r...