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What is the proper #include for the function 'sleep()'?
...d in <unistd.h>.
Synopsis:
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
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Linear Regression and group by in R
...all: lmList(formula = response ~ year | state, data = d)
Coefficients:
(Intercept) year
CA -1.34420990 0.17139963
NY 0.00196176 -0.01852429
Degrees of freedom: 20 total; 16 residual
Residual standard error: 0.8201316
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Import CSV to SQLite
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Here's how I did it.
Make/Convert csv file to be seperated by tabs (\t) AND not enclosed by any quotes (sqlite interprets quotes literally - says old docs)
Enter the sqlite shell of the db to which the data needs to be added
sqlite> .separator "\...
Double vs single quotes
... -> get special character
puts '\1' -> get \1
so looks like * was convert to escaped character in double quotes, but not in single quotes.
BTW, it will impact the output when using in regular expression
e.g.,
str.gsub(/regular expression/, '\1,\2')
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Change EOL on multiple files in one go
... files are not already unix-style. Since replacing \n with \r\n will also convert \r\n to \r\r\n.
– Kirk Woll
Jan 10 '14 at 21:41
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How to get the month name in C#?
...'t want to write a huge switch statement or if statement on the month int . In VB.Net you can use MonthName() , but what about C#?
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H2 in-memory database. Table not found
...with URL "jdbc:h2:test" . I create a table using CREATE TABLE PERSON (ID INT PRIMARY KEY, FIRSTNAME VARCHAR(64), LASTNAME VARCHAR(64)); . I then select everything from this (empty) table using SELECT * FROM PERSON . So far, so good.
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what is reverse() in Django
...to generate the url from your app's url configuration file: e.g. path('<int:profile.id>/profile', views.profile, name="profile").
But as the OP have noted, the use of reverse() is also commonly combined with the use of HttpResponseRedirect. But why?
I am not quite sure what this is but it...
How to use BigInteger?
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BigInteger is immutable. The javadocs states that add() "[r]eturns a BigInteger whose value is (this + val)." Therefore, you can't change sum, you need to reassign the result of the add method to sum variable.
sum = sum.add(Bi...
Change default primary key in Eloquent
...t adds it for you (and will error out otherwise).
– Mint
Feb 7 '17 at 21:08
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