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Convert a list to a data frame
...hich in turn yields FALSE as its default.
Assuming your list of lists is called l:
df <- data.frame(matrix(unlist(l), nrow=length(l), byrow=T))
The above will convert all character columns to factors, to avoid this you can add a parameter to the data.frame() call:
df <- data.frame(matrix(unl...
Check if a row exists, otherwise insert
...cedure that updates a row in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction.
11 Ans...
Google Maps API - Get Coordinates of address
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What you are looking for is called Geocoding.
Google provides a Geocoding Web Service which should do what you're looking for. You will be able to do geocoding on your server.
JSON Example:
http://maps.google.com/maps/api/geocode/json?address=1600+...
How to bind inverse boolean properties in WPF?
...f you have 100 objects, you would have to add an IsNotReadOnly property to all 100 objects. That property would have to be a DependencyProperty. That adds about 10 lines of code to all 100 objects or 1000 lines of code. The Converter is 20 lines of code. 1000 lines or 20 lines. Which would you choos...
Why is no one using make for Java?
...ency, and then a rule to resolve that dependency.
With basic C, that typically "to convert a main.c file to a main.o file, run "cc main.c".
You can do that in java, but you quickly learn something.
Mostly that the javac compiler is slow to start up.
The difference between:
javac Main.java
javac...
Can we pass parameters to a view in SQL?
...RETURNS TABLE
AS
RETURN
SELECT * FROM emp WHERE emp_id=@pintEno;
This allows you to use it as a normal view, with:
SELECT * FROM v_emp(10)
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Tying in to Django Admin's Model History
...ty Alchin's approach has been open sourced and extended in an application called django-simple-history.
– Trey Hunner
Sep 6 '11 at 17:41
5
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WCF service startup error “This collection already contains an address with scheme http”
...n containing a WCF service contract and a Silverlight control which makes calls to that WCF service. On my development and test servers it works great.
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Remove the last three characters from a string
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read last 3 characters from string [Initially asked question]
You can use string.Substring and give it the starting index and it will get the substring starting from given index till end.
myString.Substring(myString.Length-3)
Retrieves a substring from this...
Recover from git reset --hard?
...eset HEAD@{1}
This will restore to the previous HEAD
[1] vim e.g. optionally stores persistent undo, eclipse IDE stores local history; such features might save your a**
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