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python max function using 'key' and lambda expression
... largest.
How does key work?
By default in Python 2 key compares items based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular attribute/index, you've to use th...
C++静态和多态，亦敌亦友 - C/C++ - 清泛网 - 专注C/C++及内核技术
...遭遇静态函数
#include <iostream>
using namespace std;
class Base
{
public:
virtual void foo(void){ cout << "Base::foo()" << endl; }
};
class Derived : public Base
{
public:
void foo(void){ cout << "Derived::foo()" << endl; }
} ;
class DerivedAgain : public Derived
...
Remove an element from a Bash array
...). In practice, O(n) assuming k much lower than n. Most of the speed up is based on using associative array to identify items to be removed.
Performance (n-array size, k-values to delete). Performance measure seconds of user time
N K New(seconds) Current(seconds) Speedup
1000 10 ...
__init__ for unittest.TestCase
...
You are overriding the TestCase's __init__, so you might want to let the base class handle the arguments for you.
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How do i find out what all symbols are exported from a shared object?
...amp: 53BBA519 Tue Jul 8 10:00:25 2014
Version: 0.00
Ordinal base: 1
# of functions: 31
# of Names: 31
Addresses of functions: 000375C8
Addresses of name ordinals: 000376C0
Addresses of names: 00037644
Entry Pt Ordn Name
0001FDA0 1 pcre_assign_jit_stack
000380...
What is hashCode used for? Is it unique?
...eful distribution in a
hash table. For uniqueness, the hash code must be based on the value
of an instance field or property instead of a static field or
property.
Objects used as a key in a Hashtable object must also override the
GetHashCode method because those objects must generate t...
PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
How do I modify the owner of all tables in a PostgreSQL database?
20 Answers
20
...
How to get an object's properties in JavaScript / jQuery?
...oking JavaScript's native for in loop:
var obj = {
foo: 'bar',
base: 'ball'
};
for(var key in obj) {
alert('key: ' + key + '\n' + 'value: ' + obj[key]);
}
or using jQuery's .each() method:
$.each(obj, function(key, element) {
alert('key: ' + key + '\n' + 'value: ' + element...
How to use multiple AWS Accounts from the command line?
...ript to set corresponding values of environment variables for each account based on user input. Doing so, you don't need to create any aliases and, furthermore, tools like ELB tools, Auto Scaling Command Line Tools will work under multiple accounts as well.
...
Use latest version of Internet Explorer in the webbrowser control
....
11000 (0x2AF8) - Internet Explorer 11. Webpages containing
standards-based !DOCTYPE directives are displayed in IE11 edge mode.
Default value for IE11.
10001 (0x2711)- Internet Explorer 10. Webpages are displayed in IE10 Standards
mode, regardless of the !DOCTYPE directive.
10000 (0x27...