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How to remove a field completely from a MongoDB document?
... looks like this:
{
name: 'book',
tags: [
{
words: ['abc','123'],
lat: 33,
long: 22
}, {
words: ['def','456'],
lat: 44,
long: 33
}
]
}
To remove the column words from the embedded document, do this:
db.example.update(
{'tags': {'$exists':...
How to avoid annoying error “declared and not used”
... "declared and not used"
b := "another declared and not used"
c := 123
Use(a, b, c)
}
There's also a package for this so you don't have to define the Use function every time:
import (
"github.com/lunux2008/xulu"
)
func main() {
// [..]
xulu.Use(a, b, c)
}
...
Is there a label/goto in Python?
...
123
No, Python does not support labels and goto, if that is what you're after. It's a (highly) str...
Practical example where Tuple can be used in .Net 4.0?
...
Craig StuntzCraig Stuntz
123k1212 gold badges244244 silver badges266266 bronze badges
...
How can I see the size of a GitHub repository before cloning it?
...
123
If you own the repository, you can find the exact size by opening your Account Settings → Re...
Length of string in bash
...
You can use:
MYSTRING="abc123"
MYLENGTH=$(printf "%s" "$MYSTRING" | wc -c)
wc -c or wc --bytes for byte counts = Unicode characters are counted with 2, 3 or more bytes.
wc -m or wc --chars for character counts = Unicode characters are counted singl...
Search and Replace with RegEx components in Atom editor
...stuff on it before replacing? For example, if $1 captures a number group - 123, replace it by adding 1 to it, something like eval($1+1)..?
– SexyBeast
Feb 22 '15 at 0:35
7
...
How to call Base Class's __init__ method from the child class? [duplicate]
...
123
You could use super(ChildClass, self).__init__()
class BaseClass(object):
def __init__(se...
Is it possible to change the textcolor on an Android SearchView?
...
123
Add
<item name="android:editTextColor">@android:color/white</item>
to the pare...
How to add JTable in JPanel with null layout?
...bleModel model = new DefaultTableModel(
new String[][] { { "a", "123"} , {"b", "456"} },
new String[] { "name", "value" } );
JTable t = new JTable(model);
JPanel panel = new JPanel(null);
JScrollPane scroll = new JScrollPane(t);
scroll.setBounds( 0, 20...