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How to get default gateway in Mac OSX
...se of multiple default routes use:
netstat -rn | awk '/default/ {if ( index($6, "en") > 0 ){print $2} }'
192.168.128.1
These examples tested in Mavericks Terminal.app and are specific to OSX only. For example, other *nix versions frequently use 'eth' for ethernet/wireless connections...
Passing variables in remote ssh command
...nd and read that from the remote location.
In the following example,
an indexed array is filled (for convenience) with the names of the variables whose values you want to retrieve on the remote side.
For each of those variables, we give to ssh a null-terminated line giving the name and value of t...
Getting multiple keys of specified value of a generic Dictionary?
...);
firsts.Add(first);
}
// Note potential ambiguity using indexers (e.g. mapping from int to int)
// Hence the methods as well...
public IList<TSecond> this[TFirst first]
{
get { return GetByFirst(first); }
}
public IList<TFirst> this[TSecond...
How to see if an NSString starts with a certain other string?
...
I like to use this method:
if ([[temp substringToIndex:4] isEqualToString:@"http"]) {
//starts with http
}
or even easier:
if ([temp hasPrefix:@"http"]) {
//do your stuff
}
share
...
Selecting a row in DataGridView programmatically
...
Not tested, but I think you can do the following:
dataGrid.Rows[index].Selected = true;
or you could do the following (but again: not tested):
dataGrid.SelectedRows.Clear();
foreach(DataGridViewRow row in dataGrid.Rows)
{
if(YOUR CONDITION)
row.Selected = true;
}
...
MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
...ELECT * only select
the fields that you really need.
Make sure you have an index on relevant_field to speed up the equi-join.
Make sure to group by on the primary key.
If you are on InnoDB and you only select indexed fields (and things are not too complex) than MySQL will resolve your query using ...
Format number to 2 decimal places
...://www.w3resource.com/mysql/mathematical-functions/mysql-truncate-function.php
With rounding:
ROUND(0.166, 2)
-- will be evaluated to 0.17
ROUND(0.164, 2)
-- will be evaluated to 0.16
docs: http://www.w3resource.com/mysql/mathematical-functions/mysql-round-function.php
...
What's the fastest way to loop through an array in JavaScript?
...ary of choice might be more understandable and less prone to errors, since index variable scope is closed and you don't need to use brackets, accessing the array value directly:
arr.forEach(function(value, index) {
// Do stuff with value or index
});
If you really need to scratch a few milliseco...
from list of integers, get number closest to a given value
...
what about also returning the index that this happened in the list?
– Charlie Parker
Jul 10 '16 at 20:26
...
Where can I download english dictionary database in a text format? [closed]
...idged English Dictionary plus many other public domain literary works. Actually it looks like they've got several versions of the dictionary hosted with copyright from different years. The one I linked has a 2009 copyright. You may want to poke around the site and investigate the different versions ...