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How does a Breadth-First Search work when looking for Shortest Path?
...scendant, i.e. the distance from the origin to the predecessor plus the length of the edge that you are exploring is less than the current best distance for the node in question. If you can improve the distance, set the new shortest path, and remember the predecessor through which that path has been...
How to increment datetime by custom months in python without using library [duplicate]
...nge(year,month)[1])
return datetime.date(year, month, day)
In use:
>>> somedate = datetime.date.today()
>>> somedate
datetime.date(2010, 11, 9)
>>> add_months(somedate,1)
datetime.date(2010, 12, 9)
>>> add_months(somedate,23)
datetime.date(2012, 10, 9)
>...
Oracle TNS names not showing when adding new connection to SQL Developer
...ames.ora file.
In Windows, this is done by navigating to Control Panel > System > Advanced system settings > Environment Variables...
In Linux, define the TNS_ADMIN variable in the .profile file in your home directory.
Confirm the os is recognizing this environmental variable
From the ...
Eclipse Optimize Imports to Include Static Imports
...ipse Europa, which also has the Favorite preference section:
Window > Preferences > Java > Editor > Content Assist > Favorites
In mine, I have the following entries (when adding, use "New Type" and omit the .*):
org.hamcrest.Matchers.*
org.hamcrest.CoreMatchers.*
org.junit.*...
Get value from SimpleXMLElement Object
...
You have to cast simpleXML Object to a string.
$value = (string) $xml->code[0]->lat;
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How does Haskell printf work?
... part is in the types anyway.
class PrintfType r
printf :: PrintfType r => String -> r
So printf has an overloaded return type. In the trivial case, we have no extra arguments, so we need to be able to instantiate r to IO (). For this, we have the instance
instance PrintfType (IO ())
Nex...
SQL MAX of multiple columns?
...Well, you can use the CASE statement:
SELECT
CASE
WHEN Date1 >= Date2 AND Date1 >= Date3 THEN Date1
WHEN Date2 >= Date1 AND Date2 >= Date3 THEN Date2
WHEN Date3 >= Date1 AND Date3 >= Date2 THEN Date3
ELSE D...
How does the ARM architecture differ from x86? [closed]
...ncrement r1 after */
subs r2, r3, r2 /* subtract r2 from r3 and put result into r2 */
beq top /* branch(/jump) if result is zero */
which should give you a hint on how RISC and CISC instruction sets differ in complexity.
...
Reading an Excel file in python using pandas
...celFile, but then you call the .parse method and pass it the sheet name.
>>> xl = pd.ExcelFile("dummydata.xlsx")
>>> xl.sheet_names
[u'Sheet1', u'Sheet2', u'Sheet3']
>>> df = xl.parse("Sheet1")
>>> df.head()
Tid dummy1 dummy2 dummy3 du...
How do I turn off the unlimited whitespace in IntelliJ editor?
...
File menu -> Settings -> Editor -> General -> Virtual Space and uncheck 'Allow placement of caret after end of line' . You may also uncheck the other options in the Virtual Space panel.
...