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What do the python file extensions, .pyc .pyd .pyo stand for?
...ile-extensions (mostly rare and unofficial) can be found at http://dcjtech.info/topic/python-file-extensions/
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SQL query return data from multiple tables
...or more tables using an inner join (See the wikipedia entry for additional info)
How to use a union query
Left and Right Outer Joins (this stackOverflow answer is excellent to describe types of joins)
Intersect queries (and how to reproduce them if your database doesn't support them) - this is a fun...
Cryptic “Script Error.” reported in Javascript in Chrome and Firefox
...rrent page.
This behavior is intentional, to prevent scripts from leaking information to external domains. For an example of why this is necessary, imagine accidentally visiting evilsite.com, that serves up a page with <script src="yourbank.com/index.html">. (yes, we're pointing that script...
How to rsync only a specific list of files?
...r:
The --relative (-R) option is implied, which preserves the path information that is specified for each item in the file (use --no-relative or --no-R if you want to turn that off).
The --dirs (-d) option is implied, which will create directories specified in the list on the destination r...
List files by last edited date
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This added to a -ila gives you pretty much all the information you would need. $ ls -ilaRt
– Falkenfighter
Aug 14 '13 at 15:31
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The difference between try/catch/throw and try/catch(e)/throw e
...when you inspect this InvalidPersonException, the stack trace will contain info back to the Save method (that might be sufficient for you to solve the problem), but you still have access to the original exception if you need it.
As a final remark, when you are expecting an exception, you should rea...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
... on Mac, go to the file /Applications/Google\ Chrome\ VERSION.app/Contents/Info.plist and change the value of <key>KSUpdateURL</key> to <string>https://tools.google.com/abcdefg</string>. No other method worked for me (including setting defaults write com.google.Keystone.Agent...
What are the differences between the different saving methods in Hibernate?
... difference between transient, detached and persistent entities. For more info on the object states, take a look here. With save & update, you are dealing with persistent objects. They are linked to a Session so Hibernate knows what has changed. But when you have a transient object, there is...
Finding Number of Cores in Java
...s you can run cmd and terminal command and then to parse the output to get info you need.Below is shown function that returns number of physical cores .
private int getNumberOfCPUCores() {
OSValidator osValidator = new OSValidator();
String command = "";
if(osValidator.isMac()){
...
What's wrong with cplusplus.com?
...ve(v.begin(), v.end(), 10), v.end());
But cplusplus.com gives incorrect information about std::remove. It says
Notice that this function does not alter the elements past the new end, which keep their old values and are still accessible.
which isn't correct. The iterator in the range [new_en...