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Inheriting constructors
...est()
{
D1 d(6); // Oops: d.x is not initialized
D1 e; // error: D1 has no default constructor
}
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SqlDataAdapter vs SqlDataReader
... the connection open with the SQLDataReader. Failure to do this, or proper error handling to close the connection in case of an error in processing the results will CRIPPLE your application with connection leaks.
Pardon my VB, but this is the minimum amount of code you should have when using a SqlD...
How do I define and use an ENUM in Objective-C?
...tate thePlayerState; and used the variable in my methods. But I am getting errors stating that it is undeclared. How do I correctly declare and use a variable of type PlayerState in my methods?:
...
View's SELECT contains a subquery in the FROM clause
...
Looks to me as MySQL 3.6 gives the following error while MySQL 3.7 no longer errors out. I am yet to find anything in the documentation regarding this fix.
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Checking for the correct number of arguments
...output usage to stderr and exit with a failure status code.
More friendly error reporting:
#!/bin/sh
if [ "$#" -ne 1 ]; then
echo "Usage: $0 DIRECTORY" >&2
exit 1
fi
if ! [ -e "$1" ]; then
echo "$1 not found" >&2
exit 1
fi
if ! [ -d "$1" ]; then
echo "$1 not a directory" &g...
Should I use AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory?
...remote (terminal services) session and exe2 failed to run 'File not found' error, yet exe1 was in the same directory when we checked. So should I be using AppDomain.CurrentDomain.BaseDirectory or System.Environment.CurrentDirectory ?
...
In Python, how do I determine if an object is iterable?
...rts it being iterable but actually trying to iterate it causes an AttributeError (tested with Faker 4.0.2):
>>> from faker import Faker
>>> fake = Faker()
>>> iter(fake) # No exception, must be iterable
<iterator object at 0x7f1c71db58d0>
>>> list(fake) ...
How to Find And Replace Text In A File With C#
...eplacements, but Regex.Replace or String.Replace could cause out of memory error if you do many replaces in a large file.
The second is by reading the temp file line by line and manually building each line using StringBuilder and appending each processed line to the result file. This method was pre...
How to smooth a curve in the right way?
...
I got the error Traceback (most recent call last): File "hp.py", line 79, in <module> ysm2 = savitzky_golay(y_data,51,3) File "hp.py", line 42, in savitzky_golay firstvals = y[0] - np.abs( y[1:half_window+1][::-1] - y...
Checking in packages from NuGet into version control?
...;
In each project.csproj file
<Target Name="BeforeBuild">
<Error Condition="!Exists('..\Packages\')" Text="You must run &gt; msbuild build.msbuild to download required NuGet
Packages" />
<!-- optional for project that has JavaScript content -->
<ReadLinesFromF...