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What is the “right” way to iterate through an array in Ruby?
... way to iterate, useful when you want to transform one array into another.
select is the iterator to use when you want to choose a subset.
inject is useful for generating sums or products, or collecting a single result.
It may seem like a lot to remember, but don't worry, you can get by without k...
How to call methods dynamically based on their name? [duplicate]
... each with their own advantages and disadvantages. Care should be taken to select the most appropriate method for the situation.
The following table breaks down some of the more common techniques:
+---------------+-----------------+-----------------+------------+------------+
| Method | A...
Swift: Convert enum value to String?
...
I like this way better than the selected answer because I can do Audience(rawValue: "Friends")
– tidwall
Mar 29 '15 at 1:12
add a co...
How do you disable browser Autocomplete on web form field / input tag?
...(e.g. IE 11 & IE Edge). As soon as the readonly is removed, subsequent selection of the field results in the autocomplete returning.
– Gone Coding
Aug 26 '16 at 14:18
...
Tree data structure in C#
...T>[] AddChildren(params T[] values)
{
return values.Select(AddChild).ToArray();
}
public bool RemoveChild(TreeNode<T> node)
{
return _children.Remove(node);
}
public void Traverse(Action<T> action)
{
...
How to grep for two words existing on the same line? [duplicate]
...if performance really matters. If you run two commands, you should aim to select the less frequently occurring word in the first grep to minimize the amount of data processed by the second.
Diagnosis
The initial script is:
grep -c "word1" | grep -r "word2" logs
This is an odd command sequence....
How to create permanent PowerShell Aliases
...able them, open settings -> Update & Security -> For developers. Select Developer Mode (might require restart).
.
Scroll down to the PowerShell section, tick the "Change execution policy ..." option, and apply.
...
Android: Specify two different images for togglebutton using XML
...de is fine. However, the toggle button will display the first item in your selector that it matches, so the default should come last. Arrange the items in the following manner to ensure they will all be utilized:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<it...
Is there an Eclipse line-width marker?
...ou have to set it in the formatter: From menu [Window]-->[Preferences], select [Java]-->[Code Style]-->[Formatter], and then edit your formatter profile. In the tab page [Line wrapping], you can find a setting named "Maximum line width". Change this setting, and the print margin in Java sou...
How to detect user inactivity in Android
User start my app and logs in.
Selects Session Timeout to be 5 mins.
Does some operations on the app. (all in foreground)
Now User bring Myapp to background and starts some other app.
----> Count down timer starts and logs out user after 5 mins
OR user turns the screen OFF.
----> Cou...