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How can I delete a newline if it is the last character in a file?
...e:
perl -pi -e 'chomp if eof' filename
[Editor's note: -pi -e was originally -pie, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a 'perl blasphemy' on the awk website I saw.
But, in a test, it worked.
...
Comparing two byte arrays in .NET
...sn't SequenceEqual take longer to process than an unsafe comparison? Especially when your doing 1000's of comparisons?
– tcables
Jan 20 '11 at 18:18
93
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Difference between array_map, array_walk and array_filter
...ray_filter . What I could see from documentation is that you could pass a callback function to perform an action on the supplied array. But I don't seem to find any particular difference between them.
...
What is the difference between .text, .value, and .value2?
...presenting what is displayed on the screen for the cell. Using .Text is usually a bad idea because you could get ####
.Value2 gives you the underlying value of the cell (could be empty, string, error, number (double) or boolean)
.Value gives you the same as .Value2 except if the cell was formatted...
What does the construct x = x || y mean?
...
It means the title argument is optional. So if you call the method with no arguments it will use a default value of "Error".
It's shorthand for writing:
if (!title) {
title = "Error";
}
This kind of shorthand trick with boolean expressions is common in Perl too. With the...
How to get the part of a file after the first line that matches a regular expression?
...e matching line)
matchtext=TERMINATE
sed -e "1,/$matchtext/d"
## Print all the lines before the line containing the matching text:
## (from line-1 to BEFORE the matching line, NOT including the matching line)
matchtext=TERMINATE
sed -e "/$matchtext/,\$d"
The important points about replacing te...
How to get the list of files in a directory in a shell script?
I'm trying to get the contents of a directory using shell script.
10 Answers
10
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Compression/Decompression string with C#
...not be written to the output stream until the GZipStream knows that it has all of the input (i.e., to effectively compress it needs all of the data). You need to make sure that you Dispose() of the GZipStream before inspecting the output stream (e.g., mso.ToArray()). This is done with the using() { ...
How do I do multiple CASE WHEN conditions using SQL Server 2008?
...
I had a similar but it was dealing with dates.
Query to show all items for the last month, works great without conditions until Jan.
In order for it work correctly, needed to add a year and month variable
declare @yr int
declare @mth int
set @yr=(select case when month(getdate())=1 t...
Waiting on a list of Future
...//4 tasks
for(int i = 0; i < 4; i++) {
completionService.submit(new Callable<SomeResult>() {
public SomeResult call() {
...
return result;
}
});
}
int received = 0;
boolean errors = false;
while(received < 4 && !errors) {
Future&l...