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What's the difference between the 'ref' and 'out' keywords?
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The ref modifier means that:
The value is already set and
The method can read and modify it.
The out modifier means that:
The Value isn't set and can't be read by the method until it is set.
The method must set it before returning. ...
Can I have an onclick effect in CSS?
...cause a label can only be associated with one form control at a time, that means you can't just drop a button inside the <label></label> tags and call it a day. However, we can use some CSS to make the label look and behave fairly close to how an HTML button looks and behaves.
Demo for i...
Rails: Adding an index after adding column
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you mean something like this : def self.up add_column ... end add_index ... ?
– user1611830
Apr 8 '13 at 14:34
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R memory management / cannot allocate vector of size n Mb
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What do you mean by "only create the object you need in one session"?
– Benjamin
Mar 3 '11 at 0:49
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What are the git concepts of HEAD, master, origin?
...our current branch, but that doesn't have to be the case. HEAD really just means "what is my repo currently pointing at".
In the event that the commit HEAD refers to is not the tip of any branch, this is called a "detached head".
master: the name of the default branch that git creates for you when...
Why do access tokens expire?
...coded access token which can be verified by decryption. However, this also means there is no way to revoke these tokens so they are issued for a short time and must be refreshed.
The refresh token requires client authentication which makes it stronger. Unlike the above access tokens, it is usually i...
When should I use UNSIGNED and SIGNED INT in MySQL?
...ever, that UNSIGNED is MySQL-specific and not a standard SQL feature. This means that using UNSIGNED can make a future migration to a different RDBMS more complicated or cause you difficulties when using software libraries targeting standard SQL such as SQLAlchemy. I think this should be a part of t...
AngularJS Multiple ng-app within a page
...eed to get a reference to the HTML element in order to bootstrap it, which means your code is now coupled to your HTML.
Secondly the association between the two is not as apparent. With ngApp you can clearly see what HTML is associated with what module and you know where to look for that informatio...
How to use the toString method in Java?
...cause the Swing developers use (read; abuse) the toString function doesn't mean you should too.
– Toby Caulk
Jul 12 '17 at 18:42
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Disable sorting for a particular column in jQuery DataTables
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@Lasang - Did you really mean [-1], then [1], [2], etc? What does the -1 mean? Doesn't indexing for columns begin at 1 for dataTables?
– Dan Nissenbaum
Feb 13 '14 at 6:49
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