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how to find host name from IP with out login to the host
...;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12770
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1460
;; QUESTION SECTION:
;34.34.51.72.in-addr.arpa. IN PTR
;; ANSWER SECTION:
...
How do I remove background-image in css?
...one might set multiple background images setting "none" will only create a new layer and hide nothing.
http://www.css3.info/preview/multiple-backgrounds/
http://www.w3.org/TR/css3-background/#backgrounds
I have not found a solution yet...
...
Entity Framework 6 Code first Default value
...}
In the "OnModelCreating" of the context
modelBuilder.Conventions.Add( new AttributeToColumnAnnotationConvention<SqlDefaultValueAttribute, string>("SqlDefaultValue", (p, attributes) => attributes.Single().DefaultValue));
In the custom SqlGenerator
private void SetAnnotatedColumn(Colu...
Should I commit or rollback a read transaction?
...ple cleverly works around the issue with an outer transaction by opening a new database connection.
Regarding performance: depending on the isolation level, SELECTs may require a varying degree of LOCKs and temporary data (snapshots). This is cleaned up when the transaction is closed. It does not m...
How do I execute a stored procedure once for each row returned by query?
... a stored procedure that alters user data in a certain way. I pass it user_id and it does it's thing. I want to run a query on a table and then for each user_id I find run the stored procedure once on that user_id
...
Remove leading or trailing spaces in an entire column of data
... on 200 or whatever you
want.
Finish the operation.
You can now delete the new column Excel has created.
The 'side-effect' is that Excel has removed all trailing spaces in the original column.
share
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Make header and footer files to be included in multiple html pages
... load or other function that import or use a local file not work in new version of Google Chrome or IE, reason: security!
– Sinac
Jan 12 '15 at 18:56
9
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Is an anchor tag without the href attribute safe?
...se). The use of tabindex to add unfocusable elements to the tab order is a new innovation in HTML 5.
– Quentin
Jun 2 '16 at 7:55
4
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Show an image preview before upload
...document.getElementById("files").onchange = function () {
var reader = new FileReader();
reader.onload = function (e) {
// get loaded data and render thumbnail.
document.getElementById("image").src = e.target.result;
};
// read the image file as a data URL.
read...
What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
...ut there is no difference in that example.
Using the more verbose method: new Array() does have one extra option in the parameters: if you pass a number to the constructor, you will get an array of that length:
x = new Array(5);
alert(x.length); // 5
To illustrate the different ways to create an...