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Difference between abstraction and encapsulation?
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@Sanjeev encapsulation is concrete, abstraction is...abstract! ;-) encapsulation is an object you can use, abstraction is an ideal you can ...
Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
... This answer is what put me over the top. I am running windows 7 64 bit. There are a number of other steps that helped such as: ssh-keygen -t rsa -f id_rsa then deleting any heroku keys and adding the one just created: heroku keys:clear heroku keys:add C:\Users\username\.ssh\id_rsa...
Why should a Java class implement comparable?
...aim majority of interfaces are consumed by the user's code. In larger code bases, "yourself" quickly becomes "others"
– Enno Shioji
May 2 '17 at 6:01
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How to check if command line tools is installed
...n irrespective of what macOS version is
$brew config
macOS: 10.14.2-x86_64
CLT: 10.1.0.0.1.1539992718
Xcode: 10.1
This when you have Command Line tools properly installed and paths set properly.
Earlier i got output as below
macOS: 10.14.2-x86_64
CLT: N/A
Xcode: 10.1
CLT was shown as N/A in ...
Can you use if/else conditions in CSS?
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You could create two separate stylesheets and include one of them based on the comparison result
In one of the you can put
background-position : 150px 8px;
In the other one
background-position : 4px 8px;
I think that the only check you can perform in CSS is browser recognition:
Cond...
Mismatch Detected for 'RuntimeLibrary'
... change of course, these windows build should be somehow linked to the codebase, and maybe even be on the source tree. If that is too much, at least make sure the zip file with the visual studio build environment is compatible with the current stable official release.
– Yaniv
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What is the runtime performance cost of a Docker container?
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Here's some more benchmarks for Docker based memcached server versus host native memcached server using Twemperf benchmark tool https://github.com/twitter/twemperf with 5000 connections and 20k connection rate
Connect time overhead for docker based memcached seem...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
... I need to limit the ability of the token to be guessed. Because uniqid is based on the time, and according to php.net "the return value is little different from microtime()", uniqid does not meet the criteria. PHP recommends using openssl_random_pseudo_bytes() instead to generate cryptographically ...
How to get client's IP address using JavaScript?
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ts=1575967108.245
visit_scheme=https
uag=Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36 Hypothesis-Via
colo=SJC
http=http/1.1
loc=US
tls=TLSv1.3
sni=plaintext
warp=off
Limitations:
Returns plain text
DB-IP
Try it: http://api.d...
Generate GUID in MySQL for existing Data?
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@SamBarnum because UUID is generated based on the machine and timestamp. As a query that takes milliseconds to run, they have to be very very close indeed... but never the same... a good thing to assure you, is to add an UNIQUE index to that column.
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