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Remove blank lines with grep
...tc.
* previous match (whitespace) may exist from 0 to infinite times
$ match end of line
Running the code-
$ echo "
> hello
>
> ok" |
> grep -v "^[[:space:]]*$"
hello
ok
To understand more about how/why this works, I recommend reading up on regular exp...
Can't su to user jenkins after installing Jenkins
...false at the end of the line.
Hint: You don't use su and sudo at the same time.
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How Python web frameworks, WSGI and CGI fit together
... can run WSGI over CGI as Pep333 demonstrates as an example. However every time there is a request a new Python interpreter is started and the whole context (database connections, etc.) needs to be build which all take time.
The best if you want to run WSGI would be if your host would install mod_w...
Auto-expanding layout with Qt-Designer
...
@Michal Kottman: That only works at design time. It will not change the layout when the user resizes the window at run time.
– Jay
Feb 4 '13 at 21:26
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Search code inside a Github project
... GitHub properties", and I did mention this Stack Overflow question at the time ;) )
Here is an illustration of a grep within the ruby code: it will looks for repos and users, but also for what I wanted to search in the first place: the code!
Initial answer and illustration of the former issue...
Why is it said that “HTTP is a stateless protocol”?
...same socket. That is solely a performance thing, intended to minimize the time/bandwidth that'd otherwise be spent reestablishing a connection for each request.
As far as HTTP is concerned, they are all still separate requests and must contain enough information on their own to fulfill the request...
In Objective-C why should I check if self = [super init] is not nil?
...ecause of this it's standard practice to check for nil pretty much all the time, for consistency's sake.
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What is the difference between CMD and ENTRYPOINT in a Dockerfile?
... at all. ENTRYPOINT sets a metadata that can (but can be overridden) at runtime, so if you don't change anything, after starting your container, the result will be the same, however, RUN will be exectuted at build time and no matter what you do at runtime, it will be here.
– cr...
Abstract functions in Swift Language
...Also the subclass still isn't forced to implement the functions at compile time, and you not compelled to implement the protocol either.
– bandejapaisa
Dec 30 '14 at 17:05
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Reset identity seed after deleting records in SQL Server
...'t know why. Can you move it down a line. I copied and pasted this line 50 times and now I have to go back and fix it.
– AnotherDeveloper
Mar 4 '16 at 17:58
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