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How are virtual functions and vtable implemented?
...he difference should be neglible. For a class which just contains a single char member, or no members at all, the difference might be notable.
Apart from that, it is important to note that not every call to a virtual function is a virtual function call. If you have an object of a known type, the co...
How to convert a PNG image to a SVG? [closed]
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with adobe illustrator:
Open Adobe Illustrator. Click "File" and select "Open" to load the .PNG file into the program.Edit the image as needed before saving it as a .SVG file. Click "File" and select "Save As." Create a new file name or use the existing name. Make sure the selected file ty...
Picking a random element from a set
... the buckets that make up the hashset, which allows us to more efficiently select a random elements. If random elements are necessary in Java, it might be worthwhile to define a custom hash set that allows the user to look under the hood. See [boost's docs][1] for a little more in this. [1] boos...
How can I create a link to a local file on a locally-run web page?
...filename.ext">right click </a></td>
and then right click, select "copy location" option, and then paste into url.
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mongodb: insert if not exists
...what data you want to write:
data = {"$set":{"key2":"value2"}}
Now your selected document will update the value of "key2" only and leave everything else untouched.
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onchange event on input type=range is not triggering in firefox while dragging
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});
}
// example usage:
var myRangeInputElmt = document.querySelector("input" );
var myRangeValPar = document.querySelector("#rangeValPar" );
var myNumChgEvtsCell = document.querySelector("#numChgEvtsCell");
var myNumInpEvtsCell = document.querySelector("#numInpEvtsCel...
Entity Framework: There is already an open DataReader associated with this Command
...al commands executed on single connection (or single command with multiple selects) while next DataReader is executed before first one has completed the reading. The only way to avoid the exception is to allow multiple nested DataReaders = turn on MultipleActiveResultSets. Another scenario when this...
Login failed for user 'DOMAIN\MACHINENAME$'
...curity >> Logins and right click on NT AUTHORITY\NETWORK SERVICE and select Properties
In newly opened screen of Login Properties, go to the “User Mapping” tab. Then, on the “User Mapping” tab, select the desired database – especially the database for which this error message is dis...
Get button click inside UITableViewCell
... action for your button as below:
[cell.yourbutton addTarget:self action:@selector(yourButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
3) Code actions based on index as below in ViewControler:
-(void)yourButtonClicked:(UIButton*)sender
{
if (sender.tag == 0)
{
...
Import Maven dependencies in IntelliJ IDEA
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When importing the project, select pom.xml instead of the project directory. It should work.
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