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The simplest possible JavaScript countdown timer? [closed]
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I have two demos, one with jQuery and one without. Neither use date functions and are about as simple as it gets.
Demo with vanilla JavaScript
function startTimer(duration, display) {
var timer = duration, minutes, seconds;
set...
How to rollback a specific migration?
...1
Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many migrations you want to go back.
For example:
rake db:rollback STEP=5
Will also rollback all the migration that happened later (4, 3, 2 and also 1).
To roll back all migr...
Why is the Java main method static?
...thing besides the regular main() call to get things going (For example, in one case we are doing COM interoperability, and we actually pass a COM handle into main() instead of a string array).
So, long and short: the reason it is static is b/c that's convenient. The reason it's called 'main' is t...
Hash String via SHA-256 in Java
...out more information it would be hard to say why you are getting different ones. You should probably open a new question.
– Brendan Long
Aug 9 '10 at 21:16
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How to declare global variables in Android?
...amework. Note that this will not work across processes (should your app be one of the rare ones that has multiple processes).
Something to note from the example above; suppose we had instead done something like:
class MyApp extends Application {
private String myState = /* complicated and slow ...
“Default Activity Not Found” on Android Studio upgrade
...ity, to be launched when the application starts.
You should have at least one activity that looks something like this:
<activity
android:name="com.your.package.name.YourActivity"
android:label="@string/app_name">
<intent-filter>
<action android:na...
Should programmers use SSIS, and if so, why? [closed]
...loper for 10.
The value of SSIS is as a workflow engine to move data from one spot to another with maybe some limited transformation and conditional branching along the way. If your packages contain a lot of script then your team is using SSIS for the wrong tasks or isn't comfortable with SQL or ha...
What does middleware and app.use actually mean in Expressjs?
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I add a late answer to add something not mentioned in the previous answers.
By now it should be clear that middleware is/are function(s) run between the client request and the server answer. The most common middleware functionality needed are error managing, database in...
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
I hope that made sense, let me elaborate:
10 Answers
10
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Applying .gitignore to committed files
...ere's a lot of files though. I don't want to have do this for every single one
– user880954
Sep 23 '11 at 11:08
1
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