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ruby system command check exit code
I have a bunch of system calls in ruby such as the following and I want to check their exit codes simultaneously so that my script exits out if that command fails.
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When using the Java debugger in Intellij what does “Drop Frame” mean?
I was using the Java debugger within Intellij 8 and noticed a button labeled "drop frame", does anybody know what purpose this serves? How/why would this be used/useful?
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enum - getting value of enum on string conversion
...at:
print(D.x.value)
See the Programmatic access to enumeration members and their attributes section:
If you have an enum member and need its name or value:
>>>
>>> member = Color.red
>>> member.name
'red'
>>> member.value
1
You could add a __str__ meth...
SQL query to find record with ID not in another table
I have two tables with binding primary key in database and I desire to find a disjoint set between them. For example,
6 Ans...
Why are there two build.gradle files in an Android Studio project?
After having imported an Eclipse project into Android Studio, I see two build.gradle files:
2 Answers
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XML Document to String
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and the writer.getBuffer().toString() can just be writer.toString()
– bvdb
Jun 1 '17 at 10:23
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How to redirect Valgrind's output to a file?
... this saves just stderr, is it possible to save both stderr and stdout into same file in the same order as is written in terminal ( i.e. to keep coherence between outputs of tested program and error reported by valgrind) ?
– Prokop Hapala
Jan 20 ...
Don't display pushd/popd stack across several bash scripts (quiet pushd/popd)
Each time I use pushd or popd, it print the stack to standard output. How not to do so?
3 Answers
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Thread.Sleep replacement in .NET for Windows Store
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Windows Store apps embrace asynchrony - and an "asynchronous pause" is provided by Task.Delay. So within an asynchronous method, you'd write:
await Task.Delay(TimeSpan.FromSeconds(30));
... or whatever delay you want. The asynchronous method will continue 30 sec...
'await' works, but calling task.Result hangs/deadlocks
I have the following four tests and the last one hangs when I run it. Why does this happen:
5 Answers
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