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Rank function in MySQL
...orresponding ANSI standard SQL query for my requirement. Please help me to convert it to MySQL .
11 Answers
...
Explaining Python's '__enter__' and '__exit__'
...ptional case is handled here
exc = False
if not exit(mgr, *sys.exc_info()):
raise
# The exception is swallowed if exit() returns true
finally:
# The normal and non-local-goto cases are handled here
if exc:
exit(mgr, None, None, None)
try some cod...
How to use XPath in Python?
...("//*")
if len(res) != 2:
print "xpath query: wrong node set size"
sys.exit(1)
if res[0].name != "doc" or res[1].name != "foo":
print "xpath query: wrong node set value"
sys.exit(1)
doc.freeDoc()
ctxt.xpathFreeContext()
Sample of ElementTree XPath Use
from elementtree.ElementTre...
Convert array of strings into a string in Java
I want the Java code for converting an array of strings into an string.
13 Answers
13
...
ERROR: Error 1005: Can't create table (errno: 121)
...rch for these orphan tables with:
SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE '%#sql%';
The version I was working with was 5.1, but the above command only works on versions >= 5.6 (manual is incorrect about it working for 5.5 or earlier, because INNODB_SYS_TABLES does no...
In Functional Programming, what is a functor?
...fmap even
is an overloaded function that can do many wonderful things:
Convert a list of integers to a list of Booleans
Convert a tree of integers to a tree of Booleans
Convert Nothing to Nothing and Just 7 to Just False
In Haskell, this property is expressed by giving the type of fmap:
fmap ...
How do you create different variable names while in a loop? [duplicate]
...
Don't do this use a dictionary
import sys
this = sys.modules[__name__] # this is now your current namespace
for x in range(0,9):
setattr(this, 'string%s' % x, 'Hello')
print string0
print string1
print string2
print string3
print string4
print string5
print ...
Convert HH:MM:SS string to seconds only in javascript
I am having similar requirement as this: Convert time in HH:MM:SS format to seconds only?
13 Answers
...
How can I read a whole file into a string variable
...ror to be reported.
You will get a []byte instead of a string. It can be converted if really necessary:
s := string(buf)
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How to pass boolean values to a PowerShell script from a command prompt
...false'
f : Cannot process argument transformation on parameter 'b'. Cannot convert value
"System.String" to type "System.Boolean", parameters of this type only accept
booleans or numbers, use $true, $false, 1 or 0 instead.
At line:1 char:36
+ function f( [bool]$b ) { $b }; f -b <<<< '...