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How to remove a column from an existing table?
...he real challenge is finding all foreign keys. You can do this by querying system tables or using third party tools such as ApexSQL Search (free) or Red Gate Dependency tracker (premium but more features). There a whole thread on foreign keys here
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How do I get a TextBox to only accept numeric input in WPF?
...ject.GetDataPresent(DataFormats.Text))
{
string text = Convert.ToString(e.DataObject.GetData(DataFormats.Text));
if (!IsValid(text, true))
{
e.CancelCommand();
}
}
else
{
e.CancelCommand();
...
Generate a random date between two other dates
...
Convert both strings to timestamps (in your chosen resolution, e.g. milliseconds, seconds, hours, days, whatever), subtract the earlier from the later, multiply your random number (assuming it is distributed in the range [0, ...
Why can't I use float value as a template parameter?
... character pack template<char ...cs>, then the string literal can be converted into such a pack at compile time. Here is a demo on ideone. (Demo is C++14, but it's easy to port it back to C++11 - std::integer_sequence is the only difficulty)
– Aaron McDaid
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What does [ N … M ] mean in C aggregate initializers?
..., write [first ... last] = value. This is a GNU extension. For example,
int widths[] = { [0 ... 9] = 1, [10 ... 99] = 2, [100] = 3 };
It is not portable. Compiling with -pedantic with tell you so.
How does it work here?
The preprocessor replaces #include <asm/unistd.h> with its actual c...
Rank function in MySQL
...orresponding ANSI standard SQL query for my requirement. Please help me to convert it to MySQL .
11 Answers
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Using Custom Domains With IIS Express
...re
Let's use your example of the DNS name dev.example.com
edit %windows%\system32\drivers\etc\hosts file to map dev.example.com to 127.0.0.1 (admin privilege required). If you control DNS server (like in Nick's case) then the DNS entry is sufficient as this step is not needed.
If you access intern...
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
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Delete empty lines using sed
...' - | awk -f dialog_menu.awk -) real 0m0.006s user 0m0.000s sys 0m0.008s $ time (topic companies <data.tpx | gsed '/^\s*$/d' | awk -f dialog_menu.awk -) real 0m0.014s user 0m0.002s sys 0m0.006s Would you know of a nifty way to include this into an a...
T-SQL query to show table definition?
... However you can get most of the details from Information Schema Views and System Views.
SELECT ORDINAL_POSITION, COLUMN_NAME, DATA_TYPE, CHARACTER_MAXIMUM_LENGTH
, IS_NULLABLE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Customers'
SELECT CONSTRAINT_NAME
FROM INFORMATION_SCHEMA.CONS...