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How to make a background 20% transparent on Android
...w this procedure:
Given a transparency percentage, for example 20%, you know the opaque percentage value is 80% (this is 100-20=80)
The range for the alpha channel is 8 bits (2^8=256), meaning the range goes from 0 to 255.
Project the opaque percentage into the alpha range, that is, multiply the r...
Could not find an implementation of the query pattern
... Thank, I was indeed missing my equality, which was stupid of me. But I now I am getting the following error: Error 1 Could not find an implementation of the query pattern for source type 'SilverlightApplication1.Web.tblPersoon'. 'Where' not found.
– Schoof
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How to revert uncommitted changes including files and folders?
... When I try this I get "error: pathspec '.' did not match any file(s) known to git.
– Mike K
May 16 '14 at 17:12
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Binding arrow keys in JS/jQuery
...tch(e.which || e.keyCode) {.
(edit 2020)
Note that KeyboardEvent.which is now deprecated. See this example using KeyboardEvent.key for a more modern solution to detect arrow keys.
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Execute method on startup in Spring
...to execute some methods when the application starts for the first time? I know that I can do the trick of setting a method with @Scheduled annotation and it executes just after the startup, but then it will execute periodically.
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How to serialize a TimeSpan to XML
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The connect link is now broken, maybe it can be replaced with this one:connect.microsoft.com/VisualStudio/feedback/details/684819/… ? The technique also looks a little different...
– TJB
May 11 '15 at 23:...
GIT: Checkout to a specific folder
... however git status then shows a lot of mods (presumably because the index now matches the other directory and not the untouched normal work tree). git reset got it back to a good state.
– Tom Goodfellow
May 30 '14 at 7:45
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Multi-project test dependencies with gradle
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This works for me in Gradle 4.7. They now have some docs about the approach at docs.gradle.org/current/dsl/…
– Nathan Williams
May 3 '18 at 23:19
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How to suppress “unused parameter” warnings in C?
...tatic void UNUSED_FUNCTION(foo)(int bar) { ... }
Note 1):
As far as I know, MSVC doesn't have an equivalent to __attribute__((__unused__)).
Note 2):
The UNUSED macro won't work for arguments which contain parenthesis,so if you have an argument like float (*coords)[3] you can't do,float UNUSED...
XAMPP - MySQL shutdown unexpectedly
... MySQL button and it gives me an error.
I had started it just before, but now it isn't working.
39 Answers
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