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How to check 'undefined' value in jQuery
How we can add a check for an undefined variable, like:
11 Answers
11
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What's the difference between interface and @interface in java?
...while at University, so I'm a little out of touch - at any rate I've been working on a small Java project this week, and using Intellij IDEA as my IDE, for a change of pace from my regular .Net development.
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Maintain git repo inside another git repo
...ses this issue using submodules. Submodules allow you to keep a Git repository as a subdirectory of another Git repository. This lets you clone another repository into your project and keep your commits separate.
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How To Check If A Key in **kwargs Exists?
Python 3.2.3. There were some ideas listed here , which work on regular var's, but it seems **kwargs play by different rules... so why doesn't this work and how can I check to see if a key in **kwargs exists?
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how to change directory using Windows command line
...d.exe (C:\WINDOWS\System32\cmd.exe) and I have to change my current directory to "D:\temp" i.e. temp folder in the D drive.
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How many constructor arguments is too many?
... { return surname; }
public String getSsn() { return ssn; }
}
import static com.acme.CustomerBuilder.customer;
public class Client {
public void doSomething() {
Customer customer = customer()
.withSurname("Smith")
.withFirstName("Fred")
.wit...
Constructor overload in TypeScript
Has anybody done constructor overloading in TypeScript. On page 64 of the language specification (v 0.8), there are statements describing constructor overloads, but there wasn't any sample code given.
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Change directory command in Docker?
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You can run a script, or a more complex parameter to the RUN. Here is an example from a Dockerfile I've downloaded to look at previously:
RUN cd /opt && unzip treeio.zip && mv treeio-master treeio && \
rm -f treeio.zip...
When would you use .git/info/exclude instead of .gitignore to exclude files?
... confused about the pros and cons of using .git/info/exclude and .gitignore to exclude files.
4 Answers
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How to compare two Dates without the time portion?
I would like to have a compareTo method that ignores the time portion of a java.util.Date. I guess there are a number of ways to solve this. What's the simplest way?
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