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vs in Generics
...nce string derives from object. Before variance in generic interfaces was added to C# and VB.NET (in .NET 4 with VS 2010), this was a compile time error.
After .NET 4, IEnumerable<T> was marked covariant, and became IEnumerable<out T>. Since IEnumerable<out T> only uses the elem...
Apache Spark: The number of cores vs. the number of executors
...o YARN containers because the node needs some
resources to run the OS and Hadoop daemons. In this case, we leave a
gigabyte and a core for these system processes. Cloudera Manager helps
by accounting for these and configuring these YARN properties
automatically.
The likely first impulse would be to ...
How to use the pass statement?
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theUtherSide
2,58833 gold badges2727 silver badges3232 bronze badges
answered Dec 14 '12 at 21:02
sebastian_oesebastian_oe
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iOS Image Orientation has Strange Behavior
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I did R&D on it and discovered , every image file has metadata property. If the metadata specifies the orientation of the image which is generally ignored by other OS but Mac. Most of images taken are having their meta data property set to right angle. So Mac shows it 90 degree rot...
Checking if an instance's class implements an interface?
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Tomáš Votruba
16.3k88 gold badges5454 silver badges8181 bronze badges
answered Nov 8 '08 at 4:27
user19302user19302
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How does the SQL injection from the “Bobby Tables” XKCD comic work?
...'" + FNMName.Text + "', '" + LName.Text + "')";
This is the naive way to add text input into a query, and is very bad, as you will see.
After the values from the first name, middle name textbox FNMName.Text (which is Robert'); DROP TABLE STUDENTS; --) and the last name textbox LName.Text (let's c...
Merge branch with trunk
...and works, then do the above steps (which will be trivial since you've already tested the changes).
Update
In step 5, I mention killing the branch. That's because once a branch from a feature is in the trunk, it should be considered as part of the trunk. In that case the branch should be killed ...
Is there a JavaScript strcmp()?
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leaf
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answered Jul 24 '09 at 18:38
newacctnewacct
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How to use PHP OPCache?
...l first have to enable it. To do this you would have to do the following.
Add the following line to your php.ini:
zend_extension=/full/path/to/opcache.so (nix)
zend_extension=C:\path\to\php_opcache.dll (win)
Note that when the path contains spaces you should wrap it in quotes:
zend_extension="C...
How to encode the filename parameter of Content-Disposition header in HTTP?
Web applications that want to force a resource to be downloaded rather than directly rendered in a Web browser issue a Content-Disposition header in the HTTP response of the form:
...