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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...
How do I view 'git diff' output with my preferred diff tool/ viewer?
...le in the wor
It's basically git-mergetool modified to operate on the git index/worktree.
The usual use case for this script is when you have either staged or unstaged changes and you'd like to see the changes in a side-by-side diff viewer (e.g. xxdiff, tkdiff, etc).
git difftool [<filename>...
Adding iOS UITableView HeaderView (not section header)
...eight of the cell given a string, and pass that value in for heightForRowAtIndexPath. You can use NSString's method sizeWithFont:constrainedToSize: function to figure out the height of the text when constrained to a size.
– Mark
May 24 '13 at 15:31
...
showDialog deprecated. What's the alternative?
...tals/fragments.html
http://developer.android.com/training/basics/fragments/index.html
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Rails: Using build with a has_one association in rails
...l using command line, something like rails g model profile user:references:index address:string bio:text.
– duykhoa
Jun 25 at 13:36
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Have a fixed position div that needs to scroll if content overflows
...s direct child for body and has neighbours, then it makes sense to check z-index and top, left properties, since they could overlap each other, which might affect your mouse hover while scrolling the content.
Here is the solution for a content box (a direct child of body tag) which is commonly used...
Convert Go map to json
...till illegal.
You have two options:
1 Use map[string]Foo and convert the index to string (using fmt.Sprint for example):
datas := make(map[string]Foo, N)
for i := 0; i < 10; i++ {
datas[fmt.Sprint(i)] = Foo{Number: 1, Title: "test"}
}
j, err := json.Marshal(datas)
fmt.Println(string(j), e...
Purpose of Unions in C and C++
...rogrammatically, the easier thing to do is to access the axis by numerical index - 0 for x, 1 for y, and 2 for z.
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Convert data.frame column format from character to factor
...you to see the classes of the variables (all numeric)
#one approach it to index with the $ sign and the as.factor function
mtcars$am <- as.factor(mtcars$am)
#another approach
mtcars[, 'cyl'] <- as.factor(mtcars[, 'cyl'])
str(mtcars) # now look at the classes
This also works for character, ...
_=> what does this underscore mean in Lambda expressions?
...fectly fine. That's the case with For-loops and the "i" and "j" letters as indexers.
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