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DynamoDB vs MongoDB NoSQL [closed]
...t you pick what you like the most, and perhaps where you can find the most online support with.
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Difference between core and processor
... @Leeor I think I did the test incorrectly. it loooks like my online workspace has virtual CPUs (4) but a single processor. Thats why all of them get busy. When I performed the test on a 2 cpu physical machine (dual core), i can see that the cpu utilization is about 25% which is inline ...
How do you organise multiple git repositories, so that all of them are backed up together?
...d due to a laptop being offline, so they can be retried when it comes back online.
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Reading file contents on the client-side in javascript in various browsers
...ion available on the Mozilla Developer Network as well as various examples online. You would use it as follows:
var file = document.getElementById("fileForUpload").files[0];
if (file) {
var reader = new FileReader();
reader.readAsText(file, "UTF-8");
reader.onload = function (evt) {
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YouTube iframe API: how do I control an iframe player that's already in the HTML?
...doesn't function properly at a local host (file://). Host your (test) page online, or use JSFiddle. Examples: See the links at the top of this answer.
Q: How did you know this?
A: I have spent some time to manually interpret the API's source. I concluded that I had to use the postMessage method. To...
When to use Common Table Expression (CTE)
...ive Queries Using CTE
For exciting Microsoft definitions
Taken from Books Online:
A CTE can be used to:
Create a recursive query. For more information, see Recursive Queries Using Common Table Expressions.
Substitute for a view when the general use of a view is not required; that is, you do not ...
I just discovered why all ASP.Net websites are slow, and I am trying to work out what to do about it
...uch a huge amount of sluggishness to websites. Judging from the amount of online research I had to do (and conversations with several really experienced ASP.Net developers), a lot of people have experienced this issue, but very few people have ever got to the bottom of the cause. Maybe I will writ...
How do I syntax check a Bash script without running it?
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Time changes everything. Here is a web site which provide online syntax checking for shell script.
I found it is very powerful detecting common errors.
About ShellCheck
ShellCheck is a static analysis and linting tool for sh/bash scripts. It's mainly focused on handling typical...
Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
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Last year, I took Prof: Andrew Ng’s online machine learning course. His recommendation was:
Training: 60%
Cross validation: 20%
Testing: 20%
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What is the AppDelegate for and how do I know when to use it?
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sometimes we see something like this in tutorials online: AppDelegate* del = [AppDelegate sharedAppDelegate]; (see developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/…) what does that mean? i can see examples of using it but i don't really understand the ...