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Decimal number regular expression, where digit after decimal is optional
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Thanks Pete, well spotted. The answer has now been corrected, by adding extra parenthesis so it behaves as intended. It is now written like ^A?(B|C)$. Previously, it was written like ^A?B|C$ which actually means (^A?B)|(C$) which was incorrect. Note: ^(A?B|C)$ is als...
Configuring Git over SSH to login once
...gen or ssh-add. In my ~/.ssh/ directory I only have two files: config and known_hosts. It seems that ssh-add requires another file ~/.ssh/id_rsa. Should I create that file first using ssh-keygen as @Jefromi explained?
– reprogrammer
Oct 20 '09 at 17:22
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How do I design a class in Python?
...ant the first footstep of a dog, you do something like:
dog.footstep(0)
Now, it may be that for your case you need to read in your raw data file and compute the footstep locations. All this could be hidden in the footstep() function so that it only happens once. Something like:
class Dog:
de...
UIWebView open links in Safari
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@JedGrant swift version now on stackoverflow.com/questions/2532453/…
– Carl Sharman
Jun 4 '15 at 16:04
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Relative paths in Python
...ally, at the shell:
~ % python foo.py
/Users/jason
foo.py
However, I do know that there are some quirks with __file__ on C extensions. For example, I can do this on my Mac:
>>> import collections #note that collections is a C extension in Python 2.5
>>> collections.__file__
'/S...
Is there a minlength validation attribute in HTML5?
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There is a minlength property in the HTML5 specification now, as well as the validity.tooShort interface.
Both are now enabled in recent versions of all modern browsers. For details, see https://caniuse.com/#search=minlength.
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Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe
... relational table (STUDENT) with two columns and ID(int) and NAME(String). Now as ORM you would've made an entity class somewhat like as follows:-
package com.kashyap.default;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.G...
Optimistic vs. Pessimistic locking
I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would use either one in general?
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How do I copy SQL Azure database to my local development server?
Does anyone know how I can copy a SQL Azure database to my development machine? I'd like to stop paying to have a development database in the cloud, but it's the best way to get production data. I copy my production database to a new development database but I'd like to have that same database local...
Launch an app from within another (iPhone)
...ens if 2 apps register the same url handler and then the url is called? I know in Android you will be presented w/ a list so you can choose which of the two you want to run. How does ios handle this?
– eggie5
Jul 26 '11 at 4:13
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