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How can I find the length of a number?
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You have to make the number to string in order to take length
var num = 123;
alert((num + "").length);
or
alert(num.toString().length);
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How to Calculate Execution Time of a Code Snippet in C++
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I have another working example that uses microseconds (UNIX, POSIX, etc).
#include <sys/time.h>
typedef unsigned long long timestamp_t;
static timestamp_t
get_timestamp ()
{
struct timeval now;
gettimeofday (&now, NULL);
return now.tv_usec + ...
How to override to_json in Rails?
...t::json.encode. This happens for all types: object, numeric, date, string, etc (see the ActiveSupport code).
ActiveRecord objects behave the same way. There is a default as_json implementation that creates a hash that includes all the model's attributes. You should override as_json in your Model to...
How does type Dynamic work and how to use it?
... If you use do checks at runtime, you have to do the parameter checking in order to dispatch correctly to the right code path. That shouldn't be more overhead than any other parameter checking in your application has. If you make use of reflection, you get obviously more overhead but you have to mea...
Entity Framework rollback and remove bad migration
...t;"
All migrations applied after the one specified will be down-graded in order starting with the latest migration applied first.
Step 2: Delete your migration from the project
remove-migration name_of_bad_migration
If the remove-migration command is not available in your version of Entity Framewo...
Set opacity of background image without affecting child elements
... I think you need to change the ” quotes in the above code to " in order for it to work when straight copy-pasted.
– nsantorello
Feb 6 '12 at 16:44
6
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Copy multiple files in Python
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If you don't want to copy the whole tree (with subdirs etc), use or glob.glob("path/to/dir/*.*") to get a list of all the filenames, loop over the list and use shutil.copy to copy each file.
for filename in glob.glob(os.path.join(source_dir, '*.*')):
shutil.copy(filename, de...
Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...ile is incorrect. The header file defines prototypes which are required in order to compile the code which uses the library, but at link time the linker looks inside the library itself to make sure the functions it needs are actually there. The linker has to find the function bodies somewhere at lin...
Creating a DateTime in a specific Time Zone in c#
...ng the time zone name as one column, and the UTC value in another column. Fetch them separately and then you can create instances fairly easily.
– Jon Skeet
May 31 '09 at 11:39
2
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HTTPS with Visual Studio's built-in ASP.NET Development Server
...IS. It's time developers stop being afraid of it. Get to know App Pools, etc. Otherwise I've seen that most devs who use the built-in server are clueless when it comes to IIS. Not good for your career if you're a developer. Couple more steps to debug, so what.
– PositiveGu...