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How do I detect whether a Python variable is a function?
I have a variable, x , and I want to know whether it is pointing to a function or not.
25 Answers
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Binding arrow keys in JS/jQuery
How do I go about binding a function to left and right arrow keys in Javascript and/or jQuery? I looked at the js-hotkey plugin for jQuery (wraps the built-in bind function to add an argument to recognize specific keys), but it doesn't seem to support arrow keys.
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How do I scroll the UIScrollView when the keyboard appears?
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Following code is copied from the Keyboard Programming Guide, where the handling of this issue is explained. You should have a look into it.
// Call this method somewhere in your view controller setup code.
- (void)registerForKeyboardNotifications
{
[[NSNotificationCenter defaultCenter] addOb...
Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
...rks by obtaining the client's
operating system user name from the kernel and using it as the allowed
database user name (with optional user name mapping). This method is
only supported on local connections.
Password authentication
The password-based authentication methods are md5 and pas...
ASP.NET MVC Conditional validation
...ional validation rules in MVC3; have your model inherit IValidatableObject and implement the Validate method:
public class Person : IValidatableObject
{
public string Name { get; set; }
public bool IsSenior { get; set; }
public Senior Senior { get; set; }
public IEnumerable<Vali...
Getting a slice of keys from a map
... It's slightly better to set the actual size instead of capacity and avoid append altogether. See my answer for details.
– Vinay Pai
Jan 8 '15 at 19:37
3
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Foreach loop, determine which is the last iteration of the loop
I have a foreach loop and need to execute some logic when the last item is chosen from the List , e.g.:
26 Answers
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Adding external library into Qt Creator project
...ave to separate the directory from the library name (without the extension and without any 'lib' prefix). Of course, if you are including a Windows specific lib, this really doesn't matter.
In case you want to store your lib files in the project directory, you can reference them with the $$_PRO_FIL...
Update a dataframe in pandas while iterating row by row
I have a pandas data frame that looks like this (its a pretty big one)
8 Answers
8
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How do I get the current date in JavaScript?
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Use new Date() to generate a new Date object containing the current date and time.
var today = new Date();
var dd = String(today.getDate()).padStart(2, '0');
var mm = String(today.getMonth() + 1).padStart(2, '0'); //January is 0!
var yyyy = today.getFullYear();
today = mm + '/' + dd + '...