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Rails: Check output of path helper from console
...le, you can call app.post_path. This will work in Rails ~= 2.3 and >= 3.1.0.
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git add . vs git commit -a
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140
git commit -a means almost[*] the same thing as git add -u && git commit.
It's not th...
What is the ideal data type to use when storing latitude / longitude in a MySQL database?
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21 Answers
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How to check the version before installing a package using apt-get?
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Split delimited strings in a column and insert as new rows [duplicate]
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Here is another way of doing it..
df <- read.table(textConnection("1|a,b,c\n2|a,c\n3|b,d\n4|e,f"), header = F, sep = "|", stringsAsFactors = F)
df
## V1 V2
## 1 1 a,b,c
## 2 2 a,c
## 3 3 b,d
## 4 4 e,f
s <- strsplit(df$V2, split = ",")
data.frame(V1 = rep(df$V1, sapply(s,...
The order of keys in dictionaries
...edDict (requires Python 2.7) or higher.
Also, note that OrderedDict({'a': 1, 'b':2, 'c':3}) won't work since the dict you create with {...} has already forgotten the order of the elements. Instead, you want to use OrderedDict([('a', 1), ('b', 2), ('c', 3)]).
As mentioned in the documentation, for ...
SQL Server SELECT into existing table
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SELECT ... INTO ... only works if the table specified in the INTO clause does not exist - otherw...
SET versus SELECT when assigning variables?
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417
Quote, which summarizes from this article:
SET is the ANSI standard for variable assignm...
How to check if an array field contains a unique value or another array in MongoDB?
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Try this out:
db.blogpost.find({ 'tags' : 'tag1'}); //1
db.blogpost.find({ 'tags' : { $all : [ 'tag1', 'tag2' ] }}); //2
db.blogpost.find({ 'tags' : { $in : [ 'tag3', 'tag4' ] }}); //3
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json_encode sparse PHP array as JSON array, not JSON object
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197
You are observing this behaviour because your array is not sequential - it has keys 0 and 2, b...