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Renaming table in rails
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249
You would typically do this sort of thing in a migration:
class RenameFoo < ActiveRecord::...
Why sizeof int is wrong, while sizeof(int) is right?
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edited Oct 29 '12 at 17:49
answered Oct 29 '12 at 11:17
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Stop execution of Ruby script
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How do servlets work? Instantiation, sessions, shared variables and multithreading
...vlets are initialized in the same order specified by that value (1 is 1st, 2 is 2nd, etc). If the same value is specified for more than one servlet, then each of those servlets is loaded in the same order as they appear in the web.xml, web-fragment.xml, or @WebServlet classloading. In the event the ...
Visually managing MongoDB documents and collections [closed]
...oster – full-featured shell-centric cross-platform GUI tool for MongoDB v2.2-4. Free, Personal, and Commercial editions (feature comparison matrix).
MongoDB Compass – provides a graphical user interface that allows you to visualize your schema and perform ad-hoc find queries against the database...
Creating an array of objects in Java
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266
This is correct.
A[] a = new A[4];
...creates 4 A references, similar to doing this:
A a1;...
Is it possible to use global variables in Rust?
...tion is performed at runtime. Here are a few examples:
static SOME_INT: i32 = 5;
static SOME_STR: &'static str = "A static string";
static SOME_STRUCT: MyStruct = MyStruct {
number: 10,
string: "Some string",
};
static mut db: Option<sqlite::Connection> = None;
fn main() {
pr...
npm not working after clearing cache
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152
This worked for me:
npm cache clean --force
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CURL alternative in Python
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import urllib2
manager = urllib2.HTTPPasswordMgrWithDefaultRealm()
manager.add_password(None, 'https://app.streamsend.com/emails', 'login', 'key')
handler = urllib2.HTTPBasicAuthHandler(manager)
director = urllib2.OpenerDirector()
direc...