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Check for column name in a SqlDataReader object
...is a working sample for Jasmin's idea:
var cols = r.GetSchemaTable().Rows.Cast<DataRow>().Select
(row => row["ColumnName"] as string).ToList();
if (cols.Contains("the column name"))
{
}
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Do I have to guard against SQL injection if I used a dropdown?
... is also "involving any variable data". There are a few cases like PHP int casting maybe but it seems better to just use prepared statements. Telling (unexperienced) people that a minor performance "boost" is more important than security is way off. The answer is "incomplete" but it sends a strong m...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...e caveat (as stated on the linked page) is that it needs to be assigned or cast into an uint8_t or there will be garbage in the upper bits.
– Arkku
Apr 8 '10 at 20:20
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Fragment or Support Fragment?
I am developing an app that supports Android >= 4.0. It uses fragments from the android.app package. As I am facing problems with the older fragment implementation in 4.0, like this one , that are already fixed in the support library, I am considering switching back to the fragment implementation...
Can I add jars to maven 2 build classpath without installing them?
Maven2 is driving me crazy during the experimentation / quick and dirty mock-up phase of development.
24 Answers
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Find size of object instance in bytes in c#
...array for data and an unmanaged proxy class to access values using pointer casting if size matters, note that would be non-aligned memory so on old computers is gonna be slow but HUGE datasets on MODERN RAM is gonna be considerably faster, as minimizing the size to read from RAM is gonna be a bigger...
If unit testing is so great, why aren't more companies doing it? [closed]
...icklers for it back then -- I have no idea what our code coverage was like and I was writing most of the unit tests. Since then I've run into some companies that do lots of testing, but it's chair testing: relies on a person being there, has low repeatibility and low chance of catching bugs. The oth...
.gitignore file, where should I put it in my xcode project?
...ctice is to have one single .gitignore file on the project root directory, and place all files that you want to ignore in it, like this:
ignoredFile.whatever
ignoredDirectory/*
directory/ignoredFileInsideDirectory
.svn
Once you create the .gitignore file, the ignore files that have changes or are...
Input text dialog Android
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Remember to cast that findViewById with (ViewGroup)!
– Martin Erlic
Sep 27 '16 at 17:24
2
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Add a new element to an array without specifying the index in Bash
...mb Guy points out, it's important to note whether the array starts at zero and is sequential. Since you can make assignments to and unset non-contiguous indices ${#array[@]} is not always the next item at the end of the array.
$ array=(a b c d e f g h)
$ array[42]="i"
$ unset array[2]
$ unset array...