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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
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If you are not storing the format characters (like '+', '(', ')', '-', and ' ') and you are storing numbers from different nations, you may want to add a column to indicate the format type of the number for when the number is displayed.
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Find a value anywhere in a database
...N(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
AND OBJECTPROPERTY(
OBJECT_ID(
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How to iterate through two lists in parallel?
...is is fine when foo and bar are not massive. If they are both massive then forming zip(foo,bar) is an unnecessarily massive
temporary variable, and should be replaced by itertools.izip or
itertools.izip_longest, which returns an iterator instead of a list.
import itertools
for f,b in itertools.izip...
Why does the use of 'new' cause memory leaks?
...hatever you fancy.
This automatic_pointer thing already exists in various forms, I've just provided it to give an example. A very similar class exists in the standard library called std::unique_ptr.
There's also an old one (pre-C++11) named auto_ptr but it's now deprecated because it has a strange...
What is Java Servlet?
... Java work. Servlets aren't a language - and neither is ASPX. Both are platforms you use in conjunction with another language - usually Java in the case of servlets.
– Jon Skeet
Aug 27 '11 at 11:15
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How does password salt help against a rainbow table attack?
...s you describe), but rainbow tables require a reducing function which transforms a hash back to plaintext, to then be rehashed thousands of times, storing only the initial plaintext and final hash. Searching is computationally longer than hash tables, but 'captures' many plaintexts per hash.
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How to use underscore.js as a template engine?
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In it's simplest form you would use it like:
var html = _.template('<li><%= name %></li>', { name: 'John Smith' });
//html is now '<li>John Smith</li>'
If you're going to be using a template a few times you...
Sibling package imports
... you don't have to if you run from a project directory using -m form or if you install the package (pip and virtualenv make it easy)
– jfs
May 8 '14 at 13:15
2
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Select every Nth element in CSS
...xpression using the n variable in addition to constant numbers. You can perform addition (+), subtraction (-) and coefficient multiplication (an where a is an integer, including positive numbers, negative numbers and zero).
Here's how you would rewrite the above selector list:
div:nth-child(4n)
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When would I use Task.Yield()?
...terations. For example:
async Task DoDialogAsync()
{
var dialog = new Form();
Func<Task> showAsync = async () =>
{
await Task.Yield();
dialog.ShowDialog();
}
var dialogTask = showAsync();
await Task.Yield();
// now we're on the dialog's neste...