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Why do people hate SQL cursors so much? [closed]
...arts of the RDBMS work under the hood. Often CREATE TABLE and INSERT have SELECT statements, and the implementation is the obvious internal cursor implementation.
Using higher-level "set-based operators" bundles the cursor results into a single result set, meaning less API back-and-forth.
Cursor...
Where is the IIS Express configuration / metabase file found?
...click the IIS Express system tray icon (when running the application), and select "Show all applications":
Then, select the relevant application and click the applicationhost.config file path:
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Android emulator shows nothing except black screen and adb devices shows “device offline”
...Verify Configuration dialog. It forces turn off gpu mode whatever you have selected in the Emulated Performance. So change config.ini directly. hw.gpu.enabled=yes and hw.gpu.mode=on. The config files is normally in /user folder/.android/avd/emulator name.avd/.
– Sungsuh Park
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Accessing the index in 'for' loops?
...g enumerate, I switched to this approach to avoid having to write logic to select which object to enumerate.
– adg
Mar 31 '17 at 23:18
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“Java DateFormat is not threadsafe” what does this leads to?
...eFormat object and called its format() for values read via JDBC. I had SQL select statement where I read the same date with different names (SELECT date_from, date_from AS date_from1 ...). Such statements were using in 5 threads for various dates in WHERE clasue. Dates looked "normal" but they diffe...
Parsing huge logfiles in Node.js - read in line-by-line
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'line-by-line' is more memory efficient than the selected answer. For 1 million lines in a csv the selected answer had my node process in the low 800s of megabytes. Using 'line-by-line' it was consistently in the low 700s. This module also keeps the code clean and easy to r...
UIButton Long Press Event
...gPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.button addGestureRecognizer:longPress];
[longPress release];
And then implement the method that handles the gesture
- (void)longPress:(UILongPressGestureRecognizer*)gesture {
if ( gesture.s...
Delete column from pandas DataFrame
...the original
data can be modified without creating a copy.
Popped
Column selection, addition, deletion
Delete column column-name:
df.pop('column-name')
Examples:
df = DataFrame.from_items([('A', [1, 2, 3]), ('B', [4, 5, 6]), ('C', [7,8, 9])], orient='index', columns=['one', 'two', 'three'])
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How do I make Git use the editor of my choice for commits?
...e are 4 choices for the alternative editor (providing /usr/bin/editor).
Selection Path Priority Status
------------------------------------------------------------
0 /bin/nano 40 auto mode
1 /bin/ed -100 manual mode...
How can I retrieve Id of inserted entity using Entity framework? [closed]
... // Yes it's here
}
Entity framework by default follows each INSERT with SELECT SCOPE_IDENTITY() when auto-generated Ids are used.
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