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Compiling with g++ using multiple cores
Quick question: what is the compiler flag to allow g++ to spawn multiple instances of itself in order to compile large projects quicker (for example 4 source files at a time for a multi-core CPU)?
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How do I find the authoritative name-server for a domain name?
...or a given domain name, and this is how you accomplish it using the universally available nslookup command line tool:
command line> nslookup
> set querytype=soa
> stackoverflow.com
Server: 217.30.180.230
Address: 217.30.180.230#53
Non-authoritative answer:
stackoverflow.com...
How do I get a div to float to the bottom of its container?
....BasicImage(rotation=2);
JSfiddle: http://jsfiddle.net/wcneY/
Now rotate all the elements that float left (give them a class) 180 degrees to put them straight again. Voila! they float to the bottom.
share
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redirect COPY of stdout to log file from within bash script itself
...only stdout would be captured - i.e. your
# log file would not contain any error messages.
# SEE (and upvote) the answer by Adam Spiers, which keeps STDERR
# as a separate stream - I did not want to steal from him by simply
# adding his answer to mine.
exec 2>&1
echo "foo"
echo "bar" >&am...
Should I use Java's String.format() if performance is important?
...arking, so I did.
Results:
Benchmark Mode Cnt Score Error Units
MyBenchmark.testOld thrpt 20 9645.834 ± 238.165 ops/s // using +
MyBenchmark.testNew thrpt 20 429.898 ± 10.551 ops/s // using String.format
Units are operations per second, the more the better. ...
Mongoose, Select a specific field with find
... I think .select just is a filter to choose field after you get all of that, my recommendation is to use .find({}, 'name -_id')
– hong4rc
Mar 2 '19 at 16:15
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How to delete images from a private docker registry?
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Getting unsupported error. I have given proper digest value as the reference.
– Winster
Feb 22 '18 at 6:36
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How to determine if one array contains all elements of another array
...oing (a1 & a2) instead of (a2 & a1), which is why I was seeing the error. You are right about & retaining the order from the first array.
– CubaLibre
Aug 23 '12 at 13:35
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What is “:-!!” in C code?
...gative number. Declaring any bitfield with negative width is a compilation error.
So we'll either wind up with a bitfield that has width 0 in a struct, which is fine, or a bitfield with negative width, which is a compilation error. Then we take sizeof that field, so we get a size_t with the approp...
How to sort an array by a date property
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the first eg syntax gives error on angular7 : The left-hand side of an arithmetic operation must be of type 'any', 'number', 'bigint' or an enum type
– SURENDRANATH S
Jan 2 at 13:05
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