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Parsing domain from a URL
... One thing parse_url() does not do is only return the domain. If you add www.google.com or www.google.co.uk, it will return the host as well. Any suggestions for that?
– Gavin M. Roy
Dec 30 '08 at 0:40
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How do I make an attributed string using Swift?
...ttributed String
As an example, let's create the attributed string at the top of this post.
First create an NSMutableAttributedString with a new font attribute.
let myAttribute = [ NSAttributedString.Key.font: UIFont(name: "Chalkduster", size: 18.0)! ]
let myString = NSMutableAttributedString(str...
Does Java have something like C#'s ref and out keywords?
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This answer looks fine. It is similar to the top answer, but gives fully detailed examples on how to use a wrapper class in Java.
– hubatish
Aug 10 '18 at 16:44
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How to fix corrupted git repository?
...te the first solution by @CodeGnome to restore from a backup (run from the top level of the corrupted repo). The backup doesn't need to be complete, it only needs to have the missing objects.
git fsck 2>&1 | grep -e missing -e invalid | awk '{print $NF}' | sort -u |
while read entry; do
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Difference between malloc and calloc?
...y if there's no OS, or it's not a fancy multi-user OS that zeros pages to stop information leaks between processes.
On embedded Linux, malloc could mmap(MAP_UNINITIALIZED|MAP_ANONYMOUS), which is only enabled for some embedded kernels because it's insecure on a multi-user system.
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What is the Git equivalent for revision number?
...f my "parent" branch is based on v1.0.4, but since it has a few commits on top of that, describe has added the number of additional commits ("14") and an abbreviated object name for the commit itself ("2414721") at the end.
As long as you use sensibly named tags to tag particular releases, this ca...
How to get everything after last slash in a URL?
... WARNING: This basic trick breaks completely on URLs such as http://www.example.com/foo/?entry=the/bar#another/bar. But basic parsing like rsplit is okay if you are absolutely certain there will never be any slashes in your query or fragment parameters. However, I shudder to think of how many...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...stance. Now, your web host may certainly know much more than I about this topic, but virtual RHEL/CentOS systems I've used have reported swap available to the guest OS.
Adapting Red Hat KB Article 15252:
A Red Hat Enterprise Linux 5 system
will run just fine with no swap space
at all as lo...
Linux: compute a single hash for a given folder & contents?
...er-productive(intuitive?) for certain use cases.
This is what I have on top my head, any one who has spent some time working on this practically would have caught other gotchas and corner cases.
Here's a tool, very light on memory, which addresses most cases, might be a bit rough around the edg...
Mediator Vs Observer Object-Oriented Design Patterns
...ained the difference in intent excellently.
I will add some more info on top it.
Observer : Enables notification of a event in one object to different set of objects ( instances of different classes)