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OS detecting makefile
... still use solely uname, but you have to deal with if/else blocks to check all MinGW, Cygwin, etc. variations.
The environment variable OS is always set to "Windows_NT" on different Windows versions (see %OS% environment variable on Wikipedia).
An alternative of OS is the environment variable MSVC (...
Create a menu Bar in WPF?
...nel>
<Menu DockPanel.Dock="Top">
<MenuItem Header="_File">
<MenuItem Header="_Open"/>
<MenuItem Header="_Close"/>
<MenuItem Header="_Save"/>
</MenuItem>
</Menu>
<StackPanel></StackPa...
Run a callback only if an attribute has changed in Rails
...
Rails 5.1+
class Page < ActiveRecord::Base
before_save :do_something, if: :will_save_change_to_status_id?
private
def do_something
# ...
end
end
The commit that changed ActiveRecord::Dirty is here: https://github.com/rails/rails/commit/16ae3db5a5c6a08383b974ae...
How can I extract the folder path from file path in Python?
....path.split(os.path.abspath(existGDBPath))
('T:\\Data\\DBDesign', 'DBDesign_93_v141b.mdb')
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How do I decode HTML entities in Swift?
...his process as painless as possible (be warned that this method will strip all HTML tags as well).
Remember to initialize NSAttributedString from main thread only. It uses WebKit to parse HTML underneath, thus the requirement.
// This is a[0]["title"] in your case
let encodedString = "The Weeknd &...
Error 1022 - Can't write; duplicate key in table
...ou can not have the same foreign key names in the database tables.
Check all your tables and all your foreign keys and avoid having two foreign keys with the same exact name.
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Display names of all constraints for a table in Oracle SQL
...
You need to query the data dictionary, specifically the USER_CONS_COLUMNS view to see the table columns and corresponding constraints:
SELECT *
FROM user_cons_columns
WHERE table_name = '<your table name>';
FYI, unless you specifically created your table with ...
Comments in Android Layout xml
... > Also you cannot use them inside tags. Quite unfortunate really.
– linuxjava
Sep 3 '15 at 15:39
...
Call a “local” function within module.exports from another function in module.exports?
How do you call a function from within another function in a module.exports declaration?
8 Answers
...
Plyr视频播放器拓展：全屏、画质、字幕、缩略图、强大的用户界面 · App In...
...ialize：
when Screen1.Initialize() {
Plyr1.Initialize(
垂直布局_播放器,
"https://example.com/video.mp4",
"",
"",
"",
Plyr1.MediaTypeVideo,
[Plyr1.ControlsPlay, Plyr1.ControlsProgress, Plyr1.ControlsFullScreen])
}
when 按钮_播放.Click() {
Plyr1.Play()
}
...