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How do I validate a date string format in python?
...start needing to parse other formats in the future, as it can handle most known formats intelligently and allows you to modify your specification: dateutil parsing examples.
It also handles timezones if you need that.
Update based on comments: parse also accepts the keyword argument dayfirst whi...
Difference between knockout View Models declared as object literals vs functions
...removeItem = function(item) {
self.items.remove(item);
}
};
Now, if you are in the scope of an individual item and call $root.removeItem, the value of this will actually be the data being bound at that level (which would be the item). By using self in this case, you can ensure that i...
How do you keep user.config settings across different assembly versions in .net?
...
I know it's been awhile...
In a winforms app, just call My.Settings.Upgrade() before you load them. This will get the latest settings, whether the current version or a previous version.
...
Set every cell in matrix to 0 if that row or column contains a 0
...in the size of the matrix.
I use 1rst column and first row as markers to know where are rows/cols with only 1's. Then, there are 2 variables l and c to remember if 1rst row/column are all 1's also.
So the first pass sets the markers and resets the rest to 0's.
The second pass sets 1 in places wher...
What is the global interpreter lock (GIL) in CPython?
... come across the GIL unless you're writing a C extension" - You might not know that the cause of your multi-threaded code running at a snails pace is the GIL, but you'll certainly feel its effects. It still amazes me that to take advantage of a 32-core server with Python means I need 32 processes wi...
Integrate ZXing in Android Studio
...ent over a day trying to import Zxing from another project and was getting nowhere. Then I found this link and BAM it's done. Just follow the code example as above from this link: github.com/zxing/zxing/wiki/Scanning-Via-Intent.
– Jack BeNimble
Apr 8 '15 at 3:3...
Transform DateTime into simple Date in Ruby on Rails
... century
%Z - Time zone name
%% - Literal ``%'' character
t = Time.now
t.strftime("Printed on %m/%d/%Y") #=> "Printed on 04/09/2003"
t.strftime("at %I:%M%p") #=> "at 08:56AM"
share
...
using extern template (C++11)
...ern template to force the compiler to not instantiate a template when you know that it will be instantiated somewhere else. It is used to reduce compile time and object file size.
For example:
// header.h
template<typename T>
void ReallyBigFunction()
{
// Body
}
// source1.cpp
#inclu...
Post-increment and pre-increment within a 'for' loop produce same output [duplicate]
...ocesses. And that's why I ask the question in the first place: I want to know how they approach a problem, and how they proceed when I cast doubt on the way their world works.
At this point, most candidates realize their error and find the correct answer. But I had one who insisted his original a...
Equivalent of varchar(max) in MySQL?
...ATE TABLE foo ( v VARCHAR(65532) );
Query OK, 0 rows affected (0.01 sec)
Now if we try to use a multibyte charset at the table level, we find that it counts each character as multiple bytes. UTF8 strings don't necessarily use multiple bytes per string, but MySQL can't assume you'll restrict all yo...