PRODUCTS
Products Overview
Mathematica
Mathematica for Students
Mathematica Home Edition
Wolfram
CDF Player
(free download)
Computable Document Format (CDF)
web
Mathematica
grid
Mathematica
Wolfram
Workbench
Mathematica
Add-Ons
Wolfram|Alpha Products
SOLUTIONS
Solutions Overview
Engineering
Aerospace Engineering & Defense
Chemical Engineering
Control Systems
Electrical Engineering
Image Processing
Industrial Engineering
Materials Science
Mechanical Engineering
Operations Research
Optics
Petroleum Engineering
Biotechnology & Medicine
Bioinformatics
Medical Imaging
Finance, Statistics & Business Analysis
Actuarial Sciences
Data Analysis & Mining
Econometrics
Economics
Financial Engineering & Mathematics
Financial Risk Management
Statistics
Software Engineering & Content Delivery
Authoring & Publishing
Interface Development
Software Engineering
Web Development
Science
Astronomy
Biological Sciences
Chemistry
Environmental Sciences
Geosciences
Social & Behavioral Sciences
Design, Arts & Entertainment
Game Design, Special Effects & Generative Art
Education
STEM Education Initiative
Higher Education
Community & Technical College Education
Primary & Secondary Education
Students
Technology
Computable Document Format (CDF)
High-Performance & Parallel Computing (HPC)
See Also: Technology Guide
PURCHASE
Online Store
Other Ways to Buy
Volume & Site Licensing
Contact Sales
Software
Service
Upgrades
Training
Books
SUPPORT
Support Overview
Knowledge Base
Learning Center
Community & Forums
Training & Free Seminars
Does My Site Have a License?
Wolfram User Portal
COMPANY
About Wolfram Research
News & Events
Wolfram Blog
Partnerships
Employment Opportunities
History of
Mathematica
Stephen Wolfram's Home Page
Contact Us
OUR SITES
All Sites
Wolfram|Alpha
Demonstrations Project
MathWorld
Integrator
Wolfram Functions Site
Mathematica Journal
Wolfram Media
Wolfram
Tones
Wolfram Science
Stephen Wolfram
DOCUMENTATION CENTER SEARCH
New to
Mathematica
?
Find your learning path
»
Mathematica
>
Core Language
>
Expressions
>
Testing Expressions
>
StringQ
>
Mathematica
>
Core Language
>
Procedural Programming
>
Conditionals
>
Testing Expressions
>
StringQ
>
BUILT-IN MATHEMATICA SYMBOL
String Patterns
Working with String Patterns
Tutorials »
|
String
StringMatchQ
SameQ
See Also »
|
Atomic Elements of Expressions
Testing Expressions
More About »
StringQ
StringQ
[
expr
]
gives
True
if
expr
is a string, and
False
otherwise.
EXAMPLES
CLOSE ALL
Basic Examples
(2)
Test whether
is a string:
Pick out all strings in a list:
Test whether
is a string:
In[1]:=
Out[1]=
Pick out all strings in a list:
In[1]:=
Out[1]=
Scope
(2)
StringQ
works on strings with internal formatting:
StringQ
works on any sequence of ordinary and special characters:
Properties & Relations
(3)
All strings have head
String
:
Use
ToString
to convert an expression to a string:
Use
StringMatchQ
to test whether a string pattern matches a particular string:
SEE ALSO
String
StringMatchQ
SameQ
TUTORIALS
String Patterns
Working with String Patterns
MORE ABOUT
Atomic Elements of Expressions
Testing Expressions
New in 2