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Error while installing json gem 'mkmf.rb can't find header files for ruby'
...ols
ruby -rrbconfig -e 'puts RbConfig::CONFIG["rubyhdrdir"]'
This should now correctly print
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/include/ruby-2.3.0
Likewise, gem install should work while that SDK is selected.
To sw...
How can I parse a string with a comma thousand separator to a number?
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Yeah, but now the decimal places are lost. 2300.00 results in 2300 for example.
– user1540714
Jul 26 '12 at 9:18
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Assigning a variable NaN in python without numpy
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nan = float('nan')
And now you have the constant, nan.
You can similarly create NaN values for decimal.Decimal.:
dnan = Decimal('nan')
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Need to understand the usage of SemaphoreSlim
...ft, they go play elsewhere or just stay around for a while and check every now and then (i.e., no FIFO priorities).
When a teacher is around, she "releases" an extra row of 5 footprints on the other side of the corridor such that 5 more kids can play in the room at the same time.
It also has the s...
PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on l
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Nowadays the filename would most definitely be .user.ini
– yunzen
Nov 13 '18 at 10:52
add a comment
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How can I join multiple SQL tables using the IDs?
...OIN TableD
ON TableD.dID = TableA.dID
WHERE DATE(TableC.date)=date(now())
In your example, you are not actually including TableD. All you have to do is perform another join just like you have done before.
A note: you will notice that I removed many of your parentheses, as they really ar...
Rollback a Git merge
...lly puts in all the other commits. I guess what I dont get is, if I dont know what/where that merge was - how do I find it? You mention finding the commit_before_merge .. I guess I am not understanding that part
– cgmckeever
Jul 30 '12 at 13:42
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How to detect Adblock on my website?
...date on 2019-02-15:
Added Ghostery in the list above because the extension now also blocks requests to ads.js. Very handy. Does this mean that Ghostery is actually helping us devs to detect the blocking of ads with their extension?
Does not work with:
Privacy Badger
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How to set specific java version to Maven
...e). I need both of them for different projects. But for Maven I need 1.7, now my Maven uses 1,6 java version, how can I set Maven to use 1.7?
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Why not use Double or Float to represent currency?
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Of course if you know the precision, you can always round the result and thus avoid the whole issue. This is much faster and simpler than using BigDecimal. Another alternative is to use fixed precision int or long.
– Pe...