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How do I return rows with a specific value first?
...SQL Server, Oracle, DB2, and many other database systems, this is what you can use:
ORDER BY CASE WHEN city = 'New York' THEN 1 ELSE 2 END, city
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SVN encrypted password store
I installed SVN on a Ubuntu machine and I can't get my head around something.
3 Answers
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How to empty a redis database?
...h a lot of members, even created sets that I do not remember the name (how can I list those guys though ?).
Any idea about how to get rid of all of them ?
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How can I have linked dependencies in a git repo?
...ibraries (mine or others') that have their own repos. I don't want to duplicate those in my repo and get stuck with updating them every time a new version comes out.
However, when somebody clones the repo, it should still work locally and not have broken links.
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Force add despite the .gitignore file
... Well, I tested it to make sure it really works and it does. Can you describe your environemnt (OS, git version ...)? This is what I've basically done: echo "/foo" >> .gitignore; echo "bar" > foo; git add foo # should throw an error; git add -p foo # works (cannot paste newlin...
How to find the length of a string in R
...unction
> stri_length(c("ala ma kota","ABC",NA))
[1] 11 3 NA
Why? Because it is the FASTEST among presented solutions :)
require(microbenchmark)
require(stringi)
require(stringr)
x <- c(letters,NA,paste(sample(letters,2000,TRUE),collapse=" "))
microbenchmark(nchar(x),str_length(x),stri_le...
“Width equals height” constraint in Interface Builder
I can't find a way to create a 'square' constraint, meaning 'width equals height' in Interface Builder. I guess it's possible to add such constraint programmatically. Is there something I can do in IB? Maybe I just don't see it? It seems trivial, yet I can't find it.
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Excluding directories in os.walk
...dirs if d not in exclude]
From help(os.walk):
When topdown is true, the caller can modify the dirnames list in-place
(e.g., via del or slice assignment), and walk will only recurse into
the subdirectories whose names remain in dirnames; this can be used to
prune the search...
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Difference between make and build in Android Studio
...ll the source files in the specified scope are compiled. The scope in this case may be a file, a package, etc.
Make Project All the source files in the entire project that have been modified since the last compilation are compiled. Dependent source files, if appropriate, are also compiled. Addi...
How to change owner of PostgreSql database?
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For an alternative to REASSIGN OWNED (typically because your owner is postgres), see the snippets in stackoverflow.com/a/2686185/1839209.
– Michael Herrmann
Apr 15 at 7:46
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