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“Cloning” row or column vectors
...is useful to "clone" a row or column vector to a matrix. By cloning I mean converting a row vector such as
9 Answers
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How to get Twitter-Bootstrap navigation to show active link?
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I wonder how do I write the same in haml. Converting to haml doesn't work for me. Or perhaps I'm wrong somewhere
– benchwarmer
Jul 16 '12 at 17:31
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Action bar navigation modes are deprecated in Android L
Taking a look at the API diff report for the Android "L" preview, I see that all methods related to navigation modes in the ActionBar class (such as setNavigationMode() , addTab() , selectTab() , &c). are now deprecated.
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String variable interpolation Java [duplicate]
...ould be $, % or @. Java would only print such characters,
it would not expand them.
Variable interpolation is not supported in Java. Instead of this, we
have string formatting.
package com.zetcode;
public class StringFormatting
{
public static void main(String[] args)
{
int a...
how to create a Java Date object of midnight today and midnight tomorrow?
... If you did something like System.out.print(date), the system converted the date instance into the system time zone (CDT). 7pm in CDT is midnight in GMT. If you need a midnight in a selected time zone, you have to add this time zone's offset, taking DST into account.
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How to create streams from string in Node.Js?
...s answer is probably better.
My old answer text is preserved below.
To convert a string to a stream, you can use a paused through stream:
through().pause().queue('your string').end()
Example:
var through = require('through')
// Create a paused stream and buffer some data into it:
var stream...
Checking to see if one array's elements are in another array in PHP
... why in PHP docs about this function they say "Returns FALSE if var exists and has a non-empty, non-zero value. Otherwise returns TRUE. The following things are considered to be empty: array() (an empty array)"? Source: php.net/manual/en/function.empty.php
– Pere
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Removing an activity from the history stack
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You can achieve this by setting the android:noHistory attribute to "true" in the relevant <activity> entries in your AndroidManifest.xml file. For example:
<activity
android:name=".AnyActivity"
android:noHistory="true" />
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How to declare a variable in a PostgreSQL query
...master_login = (SELECT login
FROM master_user)
AND (SELECT registration_date
FROM master_user) > ...;
share
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How to check whether a string is Base64 encoded or not
... You can use also Base64.isBase64(String base64) instead of converting it to byte array yourself.
– Sasa
Feb 27 '14 at 12:00
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