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ALTER TABLE to add a composite primary key
...ness" changes down the road, it is not much drama to tweak the constraint, vs messing with the primary-key. And if you have child tables that foreign-key references this table, you only have to FK the surrogate-key, not all 3 columns. –
– granadaCoder
Dec 23 ...
How to create Windows EventLog source from command line?
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community wiki
3 revs, 3 users 60%MSV Muthu
13
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Resize image proportionally with CSS? [duplicate]
...to the question as it takes into account image orientation (i.e. landscape vs. portrait). Thanks!
– katamayros
Dec 14 '15 at 12:00
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String.Empty versus “” [duplicate]
...n object). So I just created a couple of simple console programs in C# 5 (VS 2013):
class Program
{
static void Main()
{
// Outputs "True"
Debug.WriteLine(string.IsInterned(string.Empty) != null);
}
}
class Program
{
static void Main()
{
// Outputs "Tru...
Putting a simple if-then-else statement on one line [duplicate]
...if syntax
fruit = 'Apple'
isApple = True if fruit == 'Apple' else False
vs
fruit = 'Apple'
isApple = False
if fruit == 'Apple' : isApple = True
share
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Delete last char of string
...for example http://blogs.msdn.com/b/ericlippert/archive/2009/05/18/foreach-vs-foreach.aspx)
Using some LINQ:
string strgroupids = groupIds.Aggregate(string.Empty, (p, q) => p + q + ',');
strgroupids = strgroupids.Substring(0, str1.Length - 1);
Without end-substringing:
string strgroupids = g...
When monkey patching an instance method, can you call the overridden method from the new implementat
...te a little bit about Module#prepend in this question: Ruby module prepend vs derivation
Mixin Inheritance (broken)
I have seen some people try (and ask about why it doesn’t work here on StackOverflow) something like this, i.e. includeing a mixin instead of prepending it:
class Foo
def bar
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Difference between e.target and e.currentTarget
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Here is a good example: joequery.me/code/event-target-vs-event-currenttarget-30-seconds
– Glenn Wark
Mar 1 '17 at 15:51
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How to create a directory in Java?
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mkdir vs mkdirs
If you want to create a single directory use mkdir
new File("/path/directory").mkdir();
If you want to create a hierarchy of folder structure use mkdirs
new File("/path/directory").mkdirs();
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Parsing HTML using Python
...ml is extremely fast:
http://blog.dispatched.ch/2010/08/16/beautifulsoup-vs-lxml-performance/
http://www.ianbicking.org/blog/2008/03/python-html-parser-performance.html
And with cssselect it’s quite easy to use for scraping HTML pages too:
from lxml.html import parse
doc = parse('http://www.g...