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How to change font of UIButton with Swift
...leLabel?.font = UIFont.boldSystemFont(ofSize: 16)
where "boldSystemFont" and "16" can be replaced with your custom font and size.
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Clearing all cookies with JavaScript
...ter experimenting, I found that a site can have only one cookie without =, and then it is a nameless cookie, you get its value actually. So if eqPos == 1, you should do name = "" instead, to erase the nameless value.
– PhiLho
Oct 7 '08 at 19:56
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How to enter in a Docker container already running with a new TTY
...ccess the container from another shell in order to "poke around" inside it and examine the files. At the moment, if I attach to the container, I am left looking at the Apache daemon and cannot run any commands.
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Clicking a button within a form causes page refresh
... refresh which triggers a 404. I’ve dropped a breakpoint in the function and it is triggering my function. If I do any of the following, it stops:
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What is the real overhead of try/catch in C#?
So, I know that try/catch does add some overhead and therefore isn't a good way of controlling process flow, but where does this overhead come from and what is it's actual impact?
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How do I read the first line of a file using cat?
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+1. you only need the head not the whole cat :P (the command tail is part of the bash pun too)
– SparK
Feb 17 '14 at 18:54
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How to do a PUT request with curl?
...n -X: "Normally you don't need this option. All sorts of GET, HEAD, POST and PUT requests are rather invoked by using dedicated command line options." But I couldn't find another way.
– Martin C. Martin
Nov 26 '13 at 15:18
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Adding a column to an existing table in a Rails migration
...ontaining line:
add_column :users, email, string
Then do a rake db:migrate and it'll run the new migration, creating the new column.
If you have not yet run the original migration you can just edit it, like you're trying to do. Your migration code is almost perfect: you just need to remove the add_...
Refreshing OAuth token using Retrofit without modifying all calls
We are using Retrofit in our Android app, to communicate with an OAuth2 secured server. Everything works great, we use the RequestInterceptor to include the access token with each call.
However there will be times, when the access token will expire, and the token needs to be refreshed. When the toke...
String is immutable. What exactly is the meaning? [duplicate]
...ith the fuss of immutability, let's just take a look into the String class and its functionality a little before coming to any conclusion.
This is how String works:
String str = "knowledge";
This, as usual, creates a string containing "knowledge" and assigns it a reference str. Simple enough? Le...