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Bash set +x without it being printed
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How about a solution based on a simplified version of @user108471:
shopt -s expand_aliases
alias trace_on='set -x'
alias trace_off='{ set +x; } 2>/dev/null'
trace_on
...stuff...
trace_off
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What's best SQL datatype for storing JSON string?
... Server 2016 will have native JSON support - a new JSON datatype (which is based on nvarchar) will be introduced, as well as a FOR JSON command to convert output from a query into JSON format
Update #2: in the final product, Microsoft did not include a separate JSON datatype - instead, there are a ...
What is the difference between 'java', 'javaw', and 'javaws'?
...ntly push the output/errors to text files. It is mostly used to launch GUI-based applications.
javaws: (Java web start) to download and run the distributed web applications. Again, no console is associated.
All are part of JRE and use the same JVM.
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How can I check that a form field is prefilled correctly using capybara?
...less of value. I'm guessing it's a bug since the docs say it should filter based on value.
– Nick
Jun 4 '14 at 20:52
1
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How is a CRC32 checksum calculated?
...x^1 + x^0)
= x^6 + x^5 + x^4 + 3*x^3 + x^2 + x^1 + x^0
If we assume x is base 2 then we get:
x^7 + x^3 + x^2 + x^1 + x^0
CRC primer Chp.5
Why? Because 3x^3 is 11x^11 (but we need only 1 or 0 pre digit) so we carry over:
=1x^110 + 1x^101 + 1x^100 + 11x^11 + 1x^10 + 1x^1 + x^0
=1x^11...
Stop Visual Studio from mixing line endings in files
When opening a text based file in Visual Studio 2010 it will then write my edits with CRLF instead of the line ending format of the original file. How can I stop VS from doing this? Any half decent editor should have this capability.
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Error handling in C code
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The second block of code is based on an earlier version of the code at Francesco Nidito's page referenced at the top of the answer. The ETRY code has been revised since this answer was written.
– Jonathan Leffler
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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?
...s are valid in css and understanding their (compliant) behaviour is mainly based on the box model and margin collapsing. While certain scenarios are more complex, a lot of common mistakes can be avoided after studying the spec.
For instance, rendering of your sample code is guided by the css spec a...
Format a date using the new date time API
...ava, see also .Net-DateTime or Date in JavaScript or DateTime in Perl) are based on the concept of a universal all-purpose unique temporal type (in German there is the poetic expression "eierlegende Wollmilchsau"). In this design there cannot be an unsupported field. But the price is high: Many time...
What difference is there between WebClient and HTTPWebRequest classes in .NET?
...lByRefObject
System.Net.WebRequest
The WebRequest is an abstract base class. So you actually don't use it directly. You use it through it derived classes - HttpWebRequest and FileWebRequest.
You use Create method of WebRequest to create an instance of WebRequest. GetResponseStream return...