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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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Specifying an Index (Non-Unique Key) Using JPA
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With JPA 2.1 you should be able to do it.
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Index;
import javax.persistence.Table;
@Entity
@Table(name = "region",
indexes = {@Index(name = "my_index_name", columnList="iso...
Comment out text in R Markdown (Rmd file)
... the text in the R code chunk, but the general texts, like % in LaTex for example.
3 Answers
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How are “mvn clean package” and “mvn clean install” different?
...kage and install?
package will compile your code and also package it. For example, if your pom says the project is a jar, it will create a jar for you when you package it and put it somewhere in the target directory (by default).
install will compile and package, but it will also put the packag...