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Evaluate empty or null JSTL c tags
...ll or empty using the c tags of JSTL?
You can use the empty keyword in a <c:if> for this:
<c:if test="${empty var1}">
var1 is empty or null.
</c:if>
<c:if test="${not empty var1}">
var1 is NOT empty or null.
</c:if>
Or the <c:choose>:
<c:choose>
...
How to change an Android app's name?
...AndroidManifest.xml.
Note: If you have added a Splash Screen and added
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
to your Splash Screen, then t...
C# generic type constraint for everything nullable
...g a runtime check may be unacceptable, but just in case:
public class Foo<T>
{
private T item;
public Foo()
{
var type = typeof(T);
if (Nullable.GetUnderlyingType(type) != null)
return;
if (type.IsClass)
return;
throw new...
ActionBarCompat: java.lang.IllegalStateException: You need to use a Theme.AppCompat
...ent theme in values-v11 also.
So the style.xml in values-v11 will be -
<!-- res/values-v11/themes.xml -->
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="QueryTheme" parent="@style/Theme.AppCompat">
<!-- Any customizations for your app running ...
Bootstrap 3.0 - Fluid Grid that includes Fixed Column Sizes
...ents.
Here is how I usually do this
http://jsfiddle.net/u9gjjebj/
html
<div class="container">
<div class="row">
<div class="col-fixed-240">Fixed 240px</div>
<div class="col-fixed-160">Fixed 160px</div>
<div class="col-md-12 col-o...
How to delete all data from solr and hbase
...n fire http url -
http://host:port/solr/[core name]/update?stream.body=<delete><query>*:*</query></delete>&commit=true
(replace [core name] with the name of the core you want to delete from). Or use this if posting data xml data:
<delete><query>*:*</q...
Variable number of arguments in C++?
...ons that operate on it called va_start(), va_arg() and va_end().
#include<stdarg.h>
int maxof(int n_args, ...)
{
va_list ap;
va_start(ap, n_args);
int max = va_arg(ap, int);
for(int i = 2; i <= n_args; i++) {
int a = va_arg(ap, int);
if(a > max) max = a;...
Jquery insert new row into table at a certain index
...ake a new tr DOM element.
Add it to the referred tr parent node.
HTML:
<table>
<tr>
<td>
<button id="0" onclick="addRow()">Expand</button>
</td>
<td>abc</td>
...
How to create multiple levels of indentation in Javadoc?
...
<ul>
<li>Element</li>
<ul>
<li>Subelement...</li>
You can pretty freely use HTML inside javadoc comments.
Update: Because it came up, I tried
<ul>
<li>one</li...
How to linebreak an svg text within javascript?
...dy know where your linebreaks should occur, you can break your text into multiple <tspan>s, each with x="0" and dy="1.4em" to simulate actual lines of text. For example:
<g transform="translate(123 456)"><!-- replace with your target upper left corner coordinates -->
<text x=...