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Difference between malloc and calloc?
.... work.. it uses paging.
Here is one optimization story about the topic:
http://blogs.fau.de/hager/2007/05/08/benchmarking-fun-with-calloc-and-zero-pages/
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How to convert an enum type variable to a string?
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// ADD_PARENTHESES_FOR_EACH_TUPLE_IN_SEQ implementation is taken from:
// http://lists.boost.org/boost-users/2012/09/76055.php
//
// This macro do the following:
// input:
// (Element1, "Element 1 string repr", 2) (Element2) (Element3, "Element 3 string repr")
// output:
// ((Element1, "E...
Check status of one port on remote host [closed]
I need a command line that can check the port status on a remote host. I tried ping xxx.xxx.xxx.xxx:161 but it doesn't recognize the "host". I thought it was a "good" answer until I did the same command against a host I know has that port open. This is for a batch file on Windows that will chec...
MySQL OPTIMIZE all tables?
MySQL has an OPTIMIZE TABLE command which can be used to reclaim unused space in a MySQL install. Is there a way (built-in command or common stored procedure) to run this optimization for every table in the database and/or server install, or is this something you'd have to script up yourself?
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Breakpoint on property change
... elements this pattern should be slightly modified. See mnaoumov.wordpress.com/2015/11/29/… for more details
– mnaoumov
Nov 29 '15 at 0:04
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There is already an open DataReader associated with this Command which must be closed first
... not clear from your example where this happens because the example is not complete.
One thing that can cause this is lazy loading triggered when iterating over the results of some query.
This can be easily solved by allowing MARS in your connection string. Add MultipleActiveResultSets=true to the...
Are there any free Xml Diff/Merge tools available? [closed]
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KDiff3 is not XML specific, but it is free. It does a nice job of comparing and merging text files.
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Threading in a PyQt application: Use Qt threads or Python threads?
...eature is running your own event loop in a thread.
If you are accessing a HTTP server, you should consider QNetworkAccessManager.
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What are the differences between “=” and “
...lifies the issue by prohibiting the "=" for assignment. Not a bad choice.
https://google.github.io/styleguide/Rguide.xml
The R manual goes into nice detail on all 5 assignment operators.
http://stat.ethz.ch/R-manual/R-patched/library/base/html/assignOps.html
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How do I set the default locale in the JVM?
... override the host's default locale by providing this information on
the command line by setting the user.language, user.country, and
user.variant system properties.
Third, your application can call the Locale.setDefault(Locale)
method. The setDefault(Locale aLocale) method lets your appl...