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How do I make a checkbox required on an ASP.NET form?
... if (this.ControlToValidate.Length == 0)
throw new System.Web.HttpException(string.Format("The ControlToValidate property of '{0}' is required.", this.ID));
if (this.CheckBoxToValidate == null)
throw new System.Web.HttpException(string.Format("This control can only ...
Using pickle.dump - TypeError: must be str, not bytes
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Polymorphism in C++
...eaning is more inclusive, as per C++ creator Bjarne Stroustrup's glossary (http://www.stroustrup.com/glossary.html):
polymorphism - providing a single interface to entities of different types. Virtual functions provide dynamic (run-time) polymorphism through an interface provided by a base class...
Why is GHC so large/big?
...
Here's the directory size breakdown on my box:
https://spreadsheets.google.com/ccc?key=0AveoXImmNnZ6dDlQeHY2MmxPcEYzYkpweEtDSS1fUlE&hl=en
It looks like the largest directory (123 MB) is the binaries for compiling the compiler itself. The documents weigh in at an ast...
What generates the “text file busy” message in Unix?
...he kernel, or execute a file that is currently open for writing.
Source: http://wiki.wlug.org.nz/ETXTBSY
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What exactly are late static bindings in PHP?
...().
Feel free to take a look at the official php documentation as well:
http://php.net/manual/en/language.oop5.late-static-bindings.php
The clearest way to explain Late Static Binding is with a simple example. Take a look at the two class definitions below, and read on.
class Vehicle {
pu...
LEN function not including trailing spaces in SQL Server
...
This is clearly documented by Microsoft in MSDN at http://msdn.microsoft.com/en-us/library/ms190329(SQL.90).aspx, which states LEN "returns the number of characters of the specified string expression, excluding trailing blanks". It is, however, an easy detail on to miss if yo...
Matplotlib - Move X-Axis label downwards, but not X-Axis Ticks
...eUploader: {
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OS X Bash, 'watch' command
...p its arguments together
Alternately, Homebrew can install the watch from http://procps.sourceforge.net/:
brew install watch
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How often does python flush to a file?
...e buffered.
For example, the open function takes a buffer size argument.
http://docs.python.org/library/functions.html#open
"The optional buffering argument specifies the file’s desired buffer size:"
0 means unbuffered,
1 means line buffered,
any other positive value means use a buffer of ...