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How to set java_home on Windows 7?
..., one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
18 Answers
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How to check if a table exists in a given schema
...sts" (no matter who's asking), querying the information schema (information_schema.tables) is incorrect, strictly speaking, because (per documentation):
Only those tables and views are shown that the current user has access
to (by way of being the owner or having some privilege).
The query p...
design a stack such that getMinimum( ) should be O(1)
...for getMinimum() -- that's excellent performance!
– j_random_hacker
Mar 26 '09 at 9:40
4
If you h...
Eclipse - Unable to install breakpoint due to missing line number attributes
...
I had the same error message in Eclipse 3.4.1, SUN JVM1.6.0_07 connected to Tomcat 6.0 (running in debug-mode on a different machine, Sun JVM1.6.0_16, the debug connection did work correctly).
Window --> Preferences --> Java --> Compiler --> Classfile Generation: "add li...
Swift make method parameter mutable?
...eclare an inout parameter. Think: passing in a pointer.
func reduceToZero(_ x: inout Int) {
while (x != 0) {
x = x-1
}
}
var a = 3
reduceToZero(&a)
print(a) // will print '0'
This can be particularly useful in recursion.
Apple's inout declaration guidelines can be found...
Return index of greatest value in an array
...
If you are utilizing underscore, you can use this nice short one-liner:
_.indexOf(arr, _.max(arr))
It will first find the value of the largest item in the array, in this case 22. Then it will return the index of where 22 is within the array, in this case 2.
...
Removing an item from a select box
...ect").removeOption(/^val/i);
- array $("#myselect").removeOption(["myselect_1", "myselect_2"]);
To remove all options, you can do $("#myselect").removeOption(/./);.
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Syntax error on print with Python 3 [duplicate]
...rror. To avoid this, it is a good practice to import print function:
from __future__ import print_function
Now your code works on both 2.x & 3.x.
Check out below examples also to get familiar with print() function.
Old: print "The answer is", 2*2
New: print("The answer is", 2*2)
Old: print...
How should I organize Python source code? [closed]
...everywhere to keep track of everything
After making sure that the relevant __init__.py files are in the folders. its just a simple case of from module import class
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Compile (but do not run) a Python script [duplicate]
...
py_compile — Compile Python source files
import py_compile
py_compile.compile('my_script.py')
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