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Appending a line to a file only if it does not already exist
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10 Answers
10
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How to find all positions of the maximum value in a list?
I have a list:
17 Answers
17
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Logging request/response messages when using HttpClient
...ome notes:
LoggingHandler intercepts the request before it handles it to HttpClientHandler which finally writes to the wire.
PostAsJsonAsync extension internally creates an ObjectContent and when ReadAsStringAsync() is called in the LoggingHandler, it causes the formatter
inside ObjectContent to s...
Regular expression to match a line that doesn't contain a word
I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v ). However, is it possible to match lines that do not contain a specific word, e.g. hede , using a regular expression?
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How to duplicate a whole line in Vim?
...g percentage of users maps Y to y$. (Consistent with D and C; (but not Vi compatible (no one cares.))) That is even proposed in :help Y.
– Aaron Thoma
Jan 19 '14 at 2:48
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Can a C++ enum class have methods?
I have an enum class with two values, and I want to create a method which receives a value
and returns the other one. I also want to maintain type safety(that's why I use enum class instead of enums).
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Is it possible to push a git stash to a remote repository?
...tash, push the stash to a remote repository, retrieve the stash on another computer, and apply the stash?
11 Answers
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Rails and PostgreSQL: Role postgres does not exist
I have installed PostgreSQL on my Mac OS Lion, and am working on a rails app. I use RVM to keep everything separate from my other Rails apps.
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Find the PID of a process that uses a port on Windows
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Just open a command shell and type (saying your port is 123456):
netstat -a -n -o | find "123456"
You will see everything you need.
The headers are:
Proto Local Address Foreign Address State PID
TCP 0...