Dim aList As New List(Of String)
aList.Add("Hello")
aList.Add("Delete Me!")
aList.Add("World")
'Remove the item from the list at index 1
aList.RemoveAt(1)
'Remove a range of items from a list, starting at index 0, for a count of 1)
'This will remove index 0, ...
Dim aList as New List(Of String)
aList.Add("Hello, World")
aList.Add("Test")
Dim output As String = aList(0)
output:
Hello, World
If you do not know the index of the item or only know part of the string then use the Find or FindAll method
Dim aList as New List(Of S...
To get First object:
MyModel.objects.first()
To get last objects:
MyModel.objects.last()
Using Filter First object:
MyModel.objects.filter(name='simple').first()
Using Filter Last object:
MyModel.objects.filter(name='simple').last()
@Entity
class Note {
@Id
Integer id;
@Basic
String note;
@Transient
String parsedNote;
String readParsedNote() {
if (parsedNote == null) { /* initialize from note */ }
return parsedNote;
}
}
If your class needs fields that should ...
Simple one-liners may be specified as command line arguments to perl using the -e switch (think "execute"):
perl -e'print "Hello, World!\n"'
Due to Windows quoting rules you can't use single-quoted strings but have to use one of these variants:
perl -e"print qq(Hello, W...
Same thing as before, but you have to copy the info into the mongodump command. You have to run the following commands rediculously fast, and it requires hand/eye coordination. Be warned! This is a rediculously hacky! But fun! Think of it as a video game! :D
# get the MONGO_URL string for your app ...
This command will create a /dump directory, and store each collection in a separate BSON blob file. This is the best way to backup or transfer databases between systems.
mongodump --db meteor
The analog to the meteordump command is meteorrestore. You can do a partial import by selecting the specific collection to import. Particularly useful after running a drop command.
# make sure your app is running
meteor
# then import your data
mongorestore --port 3001 --db meteor /path/to/dump...
db.posts.find().forEach(function(doc){
if(doc.arrayOfObjects){
// the false, true at the end refers to $upsert, and $multi, respectively
db.accounts.update({_id: doc._id}, {$unset: {'arrayOfObjects': "" }}, false, true);
}
});
var timestamp = Math.floor(new Date(1974, 6, 25).getTime() / 1000);
var hex = ('00000000' + timestamp.toString(16)).substr(-8); // zero padding
var objectId = new ObjectId(hex + new ObjectId().str.substring(8));
CSS
div {
height: 200px;
width: 200px;
background: url(http://lorempixel.com/200/200/nature/1);
mask-image: linear-gradient(to right, white, transparent);
}
HTML
<div></div>
In the above example there is an element with an image as its background. The mask that is a...
If you are inside a folder of a git repository it might be nice to show the current branch you are on. In ~/.bashrc or /etc/bashrc add the following (git is required for this to work):
function prompt_command {
# Check if we are inside a git repository
if git status > /dev/null 2>&a...
There are many cases when one has created an NSDate from only an hour and minute format, i.e: 08:12
The downside for this situation is that your NSDate is almost completely "naked" and what you need to do is to create: day, month, year, second and time zone in order to this object to &quo...
The return method only returns from the lambda, not the outer method.
Beware that this is different from Scala and Kotlin!
void threeTimes(IntConsumer r) {
for (int i = 0; i < 3; i++) {
r.accept(i);
}
}
void demo() {
threeTimes(i -> {
System.out.println(i);
return...
Sometimes you need to call a Tcl command from your expression. For example, supposing you need the length of a string in it. To do that, you just use a [...] sequence in the expression:
set halfTheStringLength [expr { [string length $theString] / 2 }]
You can call any Tcl command this way, but i...
