大约有 40,000 项符合查询结果（耗时：0.0240秒） [XML]
Rails: update_attribute vs update_attributes
... following code
# File vendor/rails/activerecord/lib/active_record/base.rb, line 2614
2614: def update_attribute(name, value)
2615: send(name.to_s + '=', value)
2616: save(false)
2617: end
and now refer update_attributes and look at its code you get
# Fil...
Download a file by jQuery.Ajax
...catch(() => alert('oh no!'));
2012 Original jQuery/iframe/Cookie based approach
Bluish is completely right about this, you can't do it through Ajax because JavaScript cannot save files directly to a user's computer (out of security concerns). Unfortunately pointing the main window's URL a...
Select mySQL based only on month and year
...
Suppose you have a database field created_at Where you take value from timestamp.
You want to search by Year & Month from created_at date.
YEAR(date(created_at))=2019 AND MONTH(date(created_at))=2
...
How can I remove the extension of a filename in a shell script?
...
If you know the extension, you can use basename
$ basename /home/jsmith/base.wiki .wiki
base
share
|
improve this answer
|
follow
...
Git merge master into feature branch
...e branch back to master eventually.
Be very careful with rebasing. Only rebase if the changes you did stayed local to your repository, e.g. you did not push any branches to some other repository. Rebasing is a great tool for you to arrange your local commits into a useful order before pushing it ou...
Turn a string into a valid filename?
...trings as file names? If human readability is not a factor I would go with base64 module which can produce file system safe strings. It won't be readable but you won't have to deal with collisions and it is reversible.
import base64
file_name_string = base64.urlsafe_b64encode(your_string)
Update:...
This type of CollectionView does not support changes to its SourceCollection from a thread different
...
public AsyncObservableCollection(IEnumerable<T> list)
: base(list)
{
}
protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e)
{
if (SynchronizationContext.Current == _synchronizationContext)
{
// Execute the Col...
Pimpl idiom vs Pure virtual class interface
...Clone" method is usually more appropriate. Examples: A Socket class, a Database class, a "policy" class, anything that would be a "closure" in a functional language.
Both pImpl and pure abstract base class are techniques to reduce compile time dependencies.
However, I only ever use pImpl to imple...
How can I use a local image as the base image with a dockerfile?
...nning the docker build command:
if you want use the local image as the base image, please without the
option --pull=true, --pull=true will always attempt to pull a newer
version of the image.
-https://github.com/docker/docker/issues/14943
...
When should you use 'friend' in C++?
... intended to be publicly available. This is particularly true of large codebases with many authors who may only be superficially familiar with different areas.
There ARE alternatives to the friend specifier, but often they are cumbersome (cpp-level concrete classes/masked typedefs) or not foolproo...