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How to profile a bash shell script slow startup?
...2 2> >(tee /tmp/sample-time.$$.log |
sed -u 's/^.*$/now/' |
date -f - +%s.%N >/tmp/sample-time.$$.tim)
set -x
Doing this will run date only once. There is a quick demo/test to show how it work:
for i in {1..4};do echo now;sleep .05;done| date -f - +%N
...
What is the reason behind cbegin/cend?
...ref = vec;
std::for_each(vec_ref.begin(), vec_ref.end(), SomeFunctor());
Now, we introduce cbegin/cend:
std::for_each(vec.cbegin(), vec.cend(), SomeFunctor());
Now, we have syntactic assurances that SomeFunctor cannot modify the elements of the vector (without a const-cast, of course). We expli...
Subtract 7 days from current date
...
use dateByAddingTimeInterval method:
NSDate *now = [NSDate date];
NSDate *sevenDaysAgo = [now dateByAddingTimeInterval:-7*24*60*60];
NSLog(@"7 days ago: %@", sevenDaysAgo);
output:
7 days ago: 2012-04-11 11:35:38 +0000
Hope it helps
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How can I do time/hours arithmetic in Google Spreadsheet?
...
Brilliant answer. Do you know if it is possible to do Format/Number/Normal within a formula (e.g., =Format.Number.Normal(A3))? Without that, I need to create a duplicate column of the hour column with the normal formatting.
– us...
How to style readonly attribute with CSS?
I'm currently using readonly="readonly" to disable fields. I'm now trying to style the attribute using CSS. I've tried using
...
How to find server name of SQL Server Management Studio
...doesn't come with a server. I downloaded a version with Advanced Tools and now everything works as supposed. :)
– Filip Vondrášek
Jul 20 '15 at 10:02
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Convert a PHP script into a stand-alone windows executable
...ritten a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to:
...
Getting started with Haskell
...ing tutorials and watching screencasts, but nothing really seems to stick.
Now, in learning various imperative/OO languages (like C, Java, PHP), exercises have been a good way for me to go. But since I don't really know what Haskell is capable of and because there are many new concepts to utilize, I...
How do I ignore files in Subversion?
...ectory.
svn status
> 0 unversioned files # ...but now the file is ignored!
cd subdirectory # now open a subdirectory.
echo "foo" > "ignoreThis.txt" # create another file named "ignoreThis.txt".
svn status
> ? ./subdirecto...
If a folder does not exist, create it
...er control in my application. I want to save a file in a specified folder. Now I want, if this folder does not exist, to first create it, and then save my file to this folder. If the folder already exists, then just save the file in it.
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