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PostgreSQL LIKE query performance variations
...in response times regarding LIKE queries to a particular table in my database. Sometimes I will get results within 200-400 ms (very acceptable) but other times it might take as much as 30 seconds to return results.
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How to capture UIView to UIImage without loss of quality on retina display
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I have created a Swift extension based on @Dima solution:
extension UIImage {
class func imageWithView(view: UIView) -> UIImage {
UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, 0.0)
view.drawViewHierarchyInRect(...
How to measure elapsed time in Python?
...apsed since the
first call to this function, as a floating point number, based on the
Win32 function QueryPerformanceCounter(). The resolution is typically
better than one microsecond.
Deprecated since version 3.3: The behaviour of this function depends
on the platform: use perf_counter...
SourceKitService Terminated
...ately I did not write that one down).
When I would start to type in an iOS based Swift project, attempting to use code completion/intellisense on any UIKit specific class, I would receive the SourceKitService Terminated issue in this thread.
Debugging process:
I started by looking through google ...
What is the difference between :focus and :active?
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Related question and the answer, based on this one: stackoverflow.com/a/48597351/5587480. From my point of view, very easy to understand
– john c. j.
Feb 3 '18 at 13:16
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SET NAMES utf8 in MySQL?
... (PHP) will get the data in utf8, no matter how they are stored in the database. Of course, they need to be stored correctly first.
DDL definition vs. real data
Encoding defined for a table/column doesn't really mean that the data are in that encoding. If you happened to have a table defined as utf8...
Show control hierarchy in the WinForms designer
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How can I visualize per-character differences in a unified diff file?
... original use case assumes you only have a patch file, no git repo or even base/modified versions. That's why I accepted @legoscia's answer... it describes exactly what was requested.
– Adam Monsen
Oct 23 '14 at 5:21
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How to delete from a text file, all lines that contain a specific string?
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You may consider using ex (which is a standard Unix command-based editor):
ex +g/match/d -cwq file
where:
+ executes given Ex command (man ex), same as -c which executes wq (write and quit)
g/match/d - Ex command to delete lines with given match, see: Power of g
The above examp...
matplotlib Legend Markers Only Once
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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