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delete a.x vs a.x = undefined
Is there any substantial difference in doing either of these?
9 Answers
9
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How to update a git clone --mirror?
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@Magnus Skog: Great. Thanks! Is this all? Do I need another commmand, like git fetch? Or git remote update alone will do it all?
– J. Bruni
May 27 '11 at 11:40
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The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
...iables);
While in the former case, the usage of auto seems very good and doesn't reduce readability, and therefore, can be used extensively, but in the latter case, it reduces readabilty and hence shouldn't be used.
Another place where auto can be used is when you use new1 or make_* functions ,...
How can I run a directive after the dom has finished rendering?
...ot a seemingly simple problem with no apparent (by reading the Angular JS docs) solution.
6 Answers
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Android basics: running code in the UI thread
... time grabbing a thread out of the thread pool, to execute a default no-op doInBackground(), before eventually doing what amounts to a post(). This is by far the least efficient of the three. Use AsyncTask if you actually have work to do in a background thread, not just for the use of onPostExecute(...
Deleting a resource using http DELETE
...requests.
I am guessing that having DELETE return two different responses does not feel idempotent to you. I find it useful to think of idempotent requests as leaving the system in the same state, not necessarily having the same response. So regardless of whether you DELETE an existing resource, ...
Best way to check if a URL is valid
...that the function will only find ASCII URLs to be valid; internationalized domain names (containing non-ASCII characters) will fail.
Example:
if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) {
die('Not a valid URL');
}
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MySQL Results as comma separated list
... |
+------------------------------------------------------------------+
| Do garden,Feed cats,Paint roof,Take dog for walk,Relax,Feed cats |
+------------------------------------------------------------------+
GROUP_CONCAT with DISTINCT
SELECT GROUP_CONCAT(TaskName)
FROM Tasks;
Result:
+----...
generate model using user:references vs user_id:integer
... a belongs_to :user relationship in your Micropost model whereas the first does not. When this relationship is specified, ActiveRecord will assume that the foreign key is kept in the user_id column and it will use a model named User to instantiate the specific user.
The second command also adds an...
Where is the list of predefined Maven properties
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Do you mean this one?
https://web.archive.org/web/20150520200505/https://docs.codehaus.org/display/MAVENUSER/MavenPropertiesGuide
I also moved its content to a GitHub repo:
https://github.com/cko/predefined_maven_propertie...