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Laravel orderBy on a relationship
...have solution by adding new column in table appointments to store datetime from table schedules. And now I only need to order by appointments.datetime I know it's not best method, but it solve the problem. XD
– Fendi Setiawan
Jan 28 at 10:37
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@ character before a function call
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As already answered the @ will stop the error (if any) from showing up.
In terms of performance this is not recommended.
What php is doing is:
reading the error display state
setting the error display to show no errors
running your function
setting the error display to it's ...
How to implement Android Pull-to-Refresh
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I've made an attempt to implement a pull to refresh component, it's far from complete but demonstrates a possible implementation, https://github.com/johannilsson/android-pulltorefresh.
Main logic is implemented in PullToRefreshListView that extends ListView. Internally it controls the scrolling ...
Renaming columns in pandas
...df
X Y c d e
0 x x x x x
1 x x x x x
2 x x x x x
From v0.25, you can also specify errors='raise' to raise errors if an invalid column-to-rename is specified. See v0.25 rename() docs.
REASSIGN COLUMN HEADERS
Use df.set_axis() with axis=1 and inplace=False (to return a copy)...
How do I lock the orientation to portrait mode in a iPhone Web Application?
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From MDN: "Note: This value does not correspond to actual device orientation. Opening the soft keyboard on most devices in portrait orientation will cause the viewport to become wider than it is tall, thereby causing the brow...
MongoDB数据导出导入工具：mongoexport,mongoimport - 大数据 & AI - 清泛...
...t. default: json (json,csv,tsv)
--file arg file to import from; if not specified stdin is used
--drop drop collection first
--headerline CSV,TSV only - use first line as headers
--upsert insert or update objects that already exist
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What does ||= (or-equals) mean in Ruby?
...ake ||= behave more like the second expansion. (I based this on an example from one of the threads linked to in another answer.)
– antinome
Oct 10 '14 at 16:08
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In Scala, what exactly does 'val a: A = _' (underscore) mean?
...huck says in his answer, this initialises the variable to a default value. From the Scala Language Specification:
0 if T is Int or one of its subrange types,
0L if T is Long,
0.0f if T is Float,
0.0d if T is Double,
false if T is Boolean,
() if T is Unit,
null for all other types T.
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What is the difference between window, screen, and document in Javascript?
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The comment from @Mandy confuses window with viewport. A window is the JavaScript object for the browser tab or <iframe> (or deprecated <frame>). The viewport is the rectangle of the rendered document seen within the tab or f...
Why should I use document based database instead of relational database?
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CouchDB (from their website)
A document database server, accessible via a RESTful JSON API. Generally, relational databases aren't simply accessed via REST services, but require a much more complex SQL API. Often these API's (JDB...