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Difference between “read commited” and “repeatable read”
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Repeatable Read
The state of the database is maintained from the start of the transaction. If you retrieve a value in session1, then update that value in session2, retrieving it again in session1 will return the same results. Reads are repeatable.
session1> BEGIN;
session1> SELECT f...
How to convert URL parameters to a JavaScript object?
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2020 ES6/7/8 and on approach
Starting ES6 and on, Javascript offers several constructs in order to create a performant solution for this issue.
This includes using URLSearchParams and iterators
let params = new URLSearchParams('abc=foo&def=%5Basf%5...
Resolving javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path
...certs information the following are the procedures to follow:
• Click on Start Button-->Run
• Type cmd. The command prompt opens (you may need to open it as administrator).
• Go to your Java/jreX/bin directory
• Type the following
keytool -list -keystore D:\Java\jdk1.5.0_12\jre\lib\secur...
What is the proper #include for the function 'sleep()'?
I am using the Big Nerd Ranch book Objective-C Programming, and it starts out by having us write in C in the first few chapters. In one of my programs it has me create, I use the sleep function. In the book it told me to put #include <stdlib.h> under the #include <stdio.h> part. This...
AngularJS - Value attribute on an input text box is ignored when there is a ng-model used?
...y to populate the form from the model.
If however, you don't have time to start over from scratch
If you have an app written, this might involve some fairly hefty architectural changes. If you're trying to use Angular to enhance an existing form, rather than constructing an entire single page app ...
What's the best way to model recurring events in a calendar application?
...s cheap as space is, you don't have infinite space, so Solution 2 is a non-starter there...
– Shaul Behr
May 20 '09 at 8:14
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Linear Regression and group by in R
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It's not a good idea to start with a mixed model - how do you know that any of the assumptions are warranted?
– hadley
Jul 31 '09 at 19:26
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Internet Explorer 11 disable “display intranet sites in compatibility view” via meta tag not working
...n your organization who implemented it with all intranet sites included to start with have completely misunderstood how Enterprise Mode is meant to be implemented.
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JSON datetime between Python and JavaScript
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This results in the following datetime object, which is the same one you started with and therefore correct:
datetime.datetime(2011, 5, 25, 20, 34, 5, 787000)
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Wait until all jQuery Ajax requests are done?
...an and clear syntax, and avoids involving any global variables such as ajaxStart and ajaxStop, which could have unwanted side effects as your page develops.
If you don't know in advance how many ajax arguments you need to wait for (i.e. you want to use a variable number of arguments), it can still ...