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“unary operator expected” error in Bash if condition
... [ "$APP_ENV" = "staging" ]
vs
if ["$APP_ENV" = "staging" ]
As always setting -x debug variable helps to find these:
set -x
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upstream sent too big header while reading response header from upstream
... get a new error on the inside machine. writev() failed (104: Connection reset by peer) while sending to client Would those proxy settings possibly fix that error, and would hey go on the upstream server or the proxy?
– Adam Patterson
Aug 15 '19 at 2:35
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Does the order of LINQ functions matter?
...he following two lines will give different results (for most providers/datasets):
myCollection.OrderBy(o => o).Distinct();
myCollection.Distinct().OrderBy(o => o);
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Match two strings in one line with grep
I am trying to use grep to match lines that contain two different strings. I have tried the following but this matches lines that contain either string1 or string2 which not what I want.
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What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
...elements is sometimes elm.style.pixelHeight/Width in IE rather than elm.offsetHeight/Width, but neither is reliable in IE, especially in quirks mode, and sometimes one gives a better result than the other.
elm.offsetTop and elm.offsetLeft are often incorrectly reported, leading to finding position...
Retrieving the output of subprocess.call() [duplicate]
How can I get the output of a process run using subprocess.call() ?
7 Answers
7
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Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
...e Answer². The primary key was my problem, solved with the GeneratedValue setting a sequence for postgresql.
– Rodrigo Ferrari
May 8 '12 at 12:59
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Suppress warning CS1998: This async method lacks 'await'
...ote: no "async"
{
var tcs = new TaskCompletionSource<int>();
tcs.SetException(new NotImplementedException());
return tcs.Task;
}
If you have a lot of methods throwing NotImplementedException (which itself may indicate that some design-level refactoring would be good), then you could wr...
Get the length of a String
How do you get the length of a String ? For example, I have a variable defined like:
41 Answers
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How to add a new audio (not mixing) into a video using ffmpeg?
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Replace audio
ffmpeg -i video.mp4 -i audio.wav -map 0:v -map 1:a -c:v copy -shortest output.mp4
The -map option allows you to manually select streams / tracks. See FFmpeg Wiki: Map for more info.
This example uses -c:v copy to stream cop...