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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...
B-Tree vs Hash Table
...faster than with a tree algorithm (O(1) instead of log(n)), but you cannot select ranges (everything in between x and y).
Tree algorithms support this in Log(n) whereas hash indexes can result in a full table scan O(n).
Also the constant overhead of hash indexes is usually bigger (which is no factor...
iTerm 2: How to set keyboard shortcuts to jump to beginning/end of line?
....
1. Simple solution (recommended)
Open Preferences
Click "Profile" tab
Select a profile in the list on the left (eg "Default") and click "Keys" tab
Click the "Presets" downdown and select "Natural Text Editing"
2. Mapping keys manually (Advanced)
If you don't want to use the "Natural Text...
What does $NON-NLS-1$ mean?
... go to
Project > Properties > Java Compiler > Errors/Warnings
and select the field
Non-externalized strings (missing/unused $NON-NLS$ tag)
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TypeError: got multiple values for argument
...r example, let's imagine a function that draws a colored box. The function selects the color to be used and delegates the drawing of the box to another function, relaying all extra arguments.
def color_box(color, *args, **kwargs):
painter.select_color(color)
painter.draw_box(*args, **kwargs...
Transfer git repositories from GitLab to GitHub - can we, how to and pitfalls (if any)?
...tory’s clone URL is required which is gitlab repo url in your case.
then select Owner and then type name for this repo and click to begin import button.
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Import regular CSS file in SCSS file?
... 2.2.2p95 (2015-04-13 revision 50295) [x64-mingw32] sass -v : Sass 3.4.17 (Selective Steve) not working here
– Cyril CHAPON
Sep 1 '15 at 7:58
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String literals and escape characters in postgresql
...the escape string syntax for escapes, e.g., E'\r\n'.
INSERT 0 1
milen=> select * from EscapeTest;
text
------------------------
This will be inserted
This will not be
(1 row)
milen=>
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rbenv not changing ruby version
...ving with YUM in Centos 7, only after that I could see the correct version selected in rbenv
– Joe Walker
Jun 16 '16 at 22:26
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Setting the filter to an OpenFileDialog to allow the typical image formats?
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Complete solution in C# is here:
private void btnSelectImage_Click(object sender, RoutedEventArgs e)
{
// Configure open file dialog box
Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
dlg.Filter = "";
ImageCodecInfo[] codecs = I...