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What's the difference between VARCHAR and CHAR?
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VARCHAR is variable-length.
CHAR is fixed length.
If your content is a fixed size, you'll get better performance with CHAR.
See the MySQL page on CHAR and VARCHAR Types for a detailed explanation (be sure to also read the comments).
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How to check if a URL is valid
...sired values. For example, URNs:
"urn:isbn:0451450523" =~ URI::regexp
=> 0
That being said, as far as I know, Ruby doesn't have a default way to parse URLs , so you'll most likely need a gem to do so. If you need to match URLs specifically in HTTP or HTTPS format, you could do something lik...
how can I add the aidl file to Android studio (from the in-app billing example)
...tory under src/main called aidl
Right click on directory aidl, select new->add package
Enter Name of the package com.android.vending.billing
Copy IInAppBillingService.aidl from the directory Android/Sdk/extras/google/play_billing to the directory App_name/app/src/main/aidl/com/android/vending/bi...
How to check whether a string is a valid HTTP URL?
...s @GoClimbColorado
public static bool CheckURLValid(this string source) => Uri.TryCreate(source, UriKind.Absolute, out Uri uriResult) && uriResult.Scheme == Uri.UriSchemeHttps;
Usage:
string url = "htts://adasd.xc.";
if(url.CheckUrlValid())
{
//valid process
}
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What does 'low in coupling and high in cohesion' mean
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>Does one app reply upon another? . . well yes, some do. Many apps use the Camera app, by workout app feeds heart and workout data to Health and Activities. I can share a snippet from one app to many others. My alarm app kn...
What difference does .AsNoTracking() make?
...its for anonymous classes in select query, such as context.Users.Select(u=> new { Name = u.Name })? Thanks.
– Dilhan Jayathilake
Feb 6 '17 at 23:33
6
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MySQL: Enable LOAD DATA LOCAL INFILE
...the my.cnf file was in the /etc directory for me.
– SgtRock
Jul 1 '15 at 18:08
Any ideas on where to go if this still ...
Using column alias in WHERE clause of MySQL query produces an error
...use to it.
SELECT * FROM (Select col1, col2,...) as t WHERE t.calcAlias > 0
calcAlias is the alias column that was calculated.
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How to check if a string is a valid JSON string in JavaScript without using Try/Catch
...y || val instanceof Object ? true : false;
}
// ES2015
var isAO = (val) => val instanceof Array || val instanceof Object ? true : false;
Usage: isAO({}) will be true, isAO('{}') will be false.
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Git on Bitbucket: Always asked for password, even after uploading my public SSH key
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Hello Googlers from the future.
On MacOS >= High Sierra, the SSH key is no longer saved to the KeyChain because of reasons.
Using ssh-add -K no longer survives restarts as well.
Here are 3 possible solutions.
I've used the first method successfully. I've creat...