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Kotlin Ternary Conditional Operator
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In Kotlin, if statements are expressions. So the following code is equivalent:
if (a) b else c
The distinction between expression and statement is important here. In Java/C#/JavaScript, if forms a statement, meaning that it does not ...
if…else within JSP or JSTL
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Should I use JSTL ?
Yes.
You can use <c:if> and <c:choose> tags to make conditional rendering in jsp using JSTL.
To simulate if , you can use:
<c:if test="condition"></c:if>
To simulate if...else, you can use:
<c:choose>
<c:wh...
Create directory if it does not exist
I am writing a PowerShell script to create several directories if they do not exist.
11 Answers
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How to check if my string is equal to null?
I want to perform some action ONLY IF my string has a meaningful value. So, I tried this.
27 Answers
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Compare two objects' properties to find differences?
...s tricky.
public bool ReflectiveEquals(object first, object second)
{
if (first == null && second == null)
{
return true;
}
if (first == null || second == null)
{
return false;
}
Type firstType = first.GetType();
if (second.GetType() != firstT...
Add floating point value to android resources/values
...l be under @dimen. Notice that you can use other "format" and/or "type" modifiers, where format stands for:
Format = enclosing data type:
float
boolean
fraction
integer
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and type stands for:
Type = resource type (referenced with R.XXXXX.name):
color
dimen
string
style
etc...
To fetch r...
Test if something is not undefined in JavaScript
I'm checking if(response[0].title !== undefined) , but I get the error:
11 Answers
11...
How to check that an object is empty in PHP?
How to find if an object is empty or not in PHP.
11 Answers
11
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How do I query if a database schema exists
... our build process we run a database update script as we deploy code to 4 different environments. Further, since the same query will get added to until we drop a release into production it has to be able to run multiple times on a given database. Like this:
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What’s the best way to check if a file exists in C++? (cross platform)
I have read the answers for What's the best way to check if a file exists in C? (cross platform) , but I'm wondering if there is a better way to do this using standard c++ libs? Preferably without trying to open the file at all.
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