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How can I determine if a String is non-null and not only whitespace in Groovy?
...tBlank = { !delegate.allWhitespace }
which let's you do:
groovy:000> foo = ''
===>
groovy:000> foo.notBlank
===> false
groovy:000> foo = 'foo'
===> foo
groovy:000> foo.notBlank
===> true
share
...
How to replace case-insensitive literal substrings in Java
...
String target = "FOOBar";
target = target.replaceAll("(?i)foo", "");
System.out.println(target);
Output:
Bar
It's worth mentioning that replaceAll treats the first argument as a regex pattern, which can cause unexpected results. To solve...
What are the differences between Abstract Factory and Factory design patterns?
......
What they're saying is that there is an object A, who wants to make a Foo object. Instead of making the Foo object itself (e.g., with a factory method), it's going to get a different object (the abstract factory) to create the Foo object.
Code Examples
To show you the difference, here is a fact...
View the change history of a file using Git versioning
...fs for each change).
In other words, if the file named bar was once named foo, then git log -p bar (without the --follow option) will only show the file's history up to the point where it was renamed -- it won't show the file's history when it was known as foo. Using git log --follow -p bar will sh...
How to give System property to my test via Gradle and -D
...ask intTest(type: Test) {
systemProperties project.properties.subMap(["foo", "bar"])
}
Which may be passed on the command-line:
$ gradle intTest -Pfoo=1 -Pbar=2
And retrieved in your test:
String foo = System.getProperty("foo");
...
How do I check if a string is valid JSON in Python?
...print is_json('{"age":100 }') #prints True
print is_json('{"foo":[5,6.8],"foo":"bar"}') #prints True
Convert a JSON string to a Python dictionary:
import json
mydict = json.loads('{"foo":"bar"}')
print(mydict['foo']) #prints bar
mylist = json.loads("[5,6,7]")
print(mylist)
[5, ...
Why can't I declare static methods in an interface?
...hod without defining it. This is the difference between
public interface Foo {
public static int bar();
}
and
public interface Foo {
public static int bar() {
...
}
}
The first is impossible for the reasons that Espo mentions: you don't know which implementing class is the correct d...
Add new field to every document in a MongoDB collection
...s if the specified field does not exist.
Check out this example:
> db.foo.find()
> db.foo.insert({"test":"a"})
> db.foo.find()
{ "_id" : ObjectId("4e93037bbf6f1dd3a0a9541a"), "test" : "a" }
> item = db.foo.findOne()
{ "_id" : ObjectId("4e93037bbf6f1dd3a0a9541a"), "test" : "a" }
> db...
Can you do a partial checkout with Subversion?
...pth empty http://svnserver/trunk/proj
svn update --set-depth infinity proj/foo
svn update --set-depth infinity proj/bar
svn update --set-depth infinity proj/baz
Alternatively, --depth immediates instead of empty checks out files and directories in trunk/proj without their contents. That way you ca...
Extract file basename without path and extension in bash [duplicate]
...ame command. Instead, you could use the following commands:
$ s=/the/path/foo.txt
$ echo "${s##*/}"
foo.txt
$ s=${s##*/}
$ echo "${s%.txt}"
foo
$ echo "${s%.*}"
foo
Note that this solution should work in all recent (post 2004) POSIX compliant shells, (e.g. bash, dash, ksh, etc.).
Source: Shell C...