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C#: Looping through lines of multiline string
...or whatever) is so common that it shouldn't require the calling code to be testing for null etc :) Having said that, if you do want to do a manual loop, this is the form that I typically prefer over Fredrik's:
using (StringReader reader = new StringReader(input))
{
string line;
while ((line...
How to get row from R data.frame
... )
#The vector your result should match
y<-c(A=5, B=4.25, C=4.5)
#Test that the items in the row match the vector you wanted
x[1,]==y
This page (from this useful site) has good information on indexing like this.
s...
How do I create a directory from within Emacs?
...:
C-x d *.py RET ; shows python source files in the CWD in `Dired` mode
+ test RET ; create `test` directory in the CWD
CWD stands for Current Working Directory.
or just create a new file with non-existing parent directories using C-x C-f and type:
M-x make-directory RET RET
Emacs asks to...
What is an idempotent operation?
... you can PUT the new information as many times as it takes in order to get confirmation from the web service. PUT-ing it a thousand times is the same as PUT-ing it once. Similarly DELETE-ing a REST resource a thousand times is the same as deleting it once. Idempotence thus makes it a lot easier t...
How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
... a read of https://the-hitchhikers-guide-to-packaging.readthedocs.org/en/latest/ - 'The Hitchhiker's Guide to Packaging', and also http://docs.python.org/3/tutorial/modules.html - which explains PYTHONPATH and packages at a lower level.
...
Best way to check if a Data Table has a null value in it
...able.Rows)
{
foreach (DataColumn col in table.Columns)
{
//test for null here
if (row[col] == DBNull.Value)
{
tableHasNull = true;
}
}
}
if (tableHasNull)
{
//handle null in table
}
You can also come out of the foreach loop with a brea...
Difference between database and schema
...of setting permissions by schema.
EDIT for additional question
drop schema test1
Msg 3729, Level 16, State 1, Line 1
Cannot drop schema 'test1' because it is being referenced by object 'copyme'.
You cannot drop a schema when it is in use. You have to first remove all objects from the schema.
Rel...
How to prevent errno 32 broken pipe?
...
It depends on how you tested it, and possibly on differences in the TCP stack implementation of the personal computer and the server.
For example, if your sendall always completes immediately (or very quickly) on the personal computer, the connec...
C# - Selectively suppress custom Obsolete warnings
...
Use #pragma warning disable:
using System;
class Test
{
[Obsolete("Message")]
static void Foo(string x)
{
}
static void Main(string[] args)
{
#pragma warning disable 0618
// This one is okay
Foo("Good");
#pragma warning restore 0618
...
Remove Select arrow on IE
...ate for pseudo element is as mentioned selector:state::pseudo. I couldn't test with IE yet worth a try :)
– Praveen
Oct 10 '16 at 18:55
...