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Difference between \n and \r?
...code for end-of-line, \r means nothing special
as a consequence, in C and most languages that somehow copy it (even remotely), \n is the standard escape sequence for end of line (translated to/from OS-specific sequences as needed)
in old Mac systems (pre-OS X), \r was the code for end-of-line instea...
Could not load file or assembly Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0
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Problem: (Sql server 2014) This issue happens when assembly Microsoft.SqlServer.management.sdk.sfc version 12.0.0.0 not found by visual studio.
Solution: just go to http://www.microsoft.com/en-us/download/details.aspx?id=42295 and download:
ENU\x64\SharedManagementObjects.msi for X64 O...
Where does PostgreSQL store the database?
Where are the files for a PostgreSQL database stored?
13 Answers
13
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How to use/install gcc on Mac OS X 10.8 / Xcode 4.4
I have install Mountain Lion (Mac OS X 10.8) and now gcc doesn't seem to be available anymore. I've also installed Xcode 4.4 so there is no more /Developer directory.
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Visual Studio 2010 always thinks project is out of date, but nothing has changed
...he rebuild:
Open the devenv.exe.config file (found in %ProgramFiles%\Microsoft Visual Studio 10.0\Common7\IDE\ or in %ProgramFiles(x86)%\Microsoft Visual Studio 10.0\Common7\IDE\). For Express versions the config file is named V*Express.exe.config.
Add the following after the </configSections&g...
python re.sub group: number after \number
How can I replace foobar with foo123bar ?
1 Answer
1
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Cache busting via params
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The param ?v=1.123 indicates a query string, and the browser will therefore think it is a new path from, say, ?v=1.0. Thus causing it to load from file, not from cache. As you want.
And, the browser will assume that the source will stay t...
What REALLY happens when you don't free after malloc?
...ram exits. The only exception I can think of might be something like Palm OS where the program's static storage and runtime memory are pretty much the same thing, so not freeing might cause the program to take up more storage. (I'm only speculating here.)
So generally, there's no harm in it, exce...
How to select where ID in Array Rails ActiveRecord without exception
...ore relevant for Rails 4.x
Do this:
current_user.comments.where(:id=>[123,"456","Michael Jackson"])
The stronger side of this approach is that it returns a Relation object, to which you can join more .where clauses, .limit clauses, etc., which is very helpful. It also allows non-existent IDs ...
Find the files existing in one directory but not in the other [closed]
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Explanation:
diff -r dir1 dir2 shows which files are only in dir1 and those only in dir2 and also the changes of the files present in both directories if any.
diff -r dir1 dir2 | grep dir1 shows which files are only in dir1
awk to print only filename.
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