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How to profile a bash shell script slow startup?
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If you have GNU date (or another version that can output nanoseconds), do this at the beginning of /etc/bash.bashrc (or wherever you'd like to begin a trace in any Bash script):
PS4='+ $(date "+%s.%N")\011 '
exec 3>&2 2>/tmp/bashstart.$$.log
set -x
add
set +x
exec 2>&3 3>...
How do I read an attribute on a class at runtime?
...at will read an attribute on a class and return that value at runtime. How do would I do this?
9 Answers
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Do the JSON keys have to be surrounded by quotes?
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Yes they do. But if you need otherwise, checkout JSON5.
JSON5 is a superset of JSON that allows ES5 syntax, including:
unquoted property keys
single-quoted, escaped and multi-line strings
alternate number formats
comments
extra whi...
How to do an update + join in PostgreSQL?
Basically, I want to do this:
9 Answers
9
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Why do most fields (class members) in Android tutorial start with `m`?
I know about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
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How do I create a URL shortener?
...×620 = [2,1]
This requires the use of integer division and modulo. A pseudo-code example:
digits = []
while num > 0
remainder = modulo(num, 62)
digits.push(remainder)
num = divide(num, 62)
digits = digits.reverse
Now map the indices 2 and 1 to your alphabet. This is how your mapping ...
How do I get a value of a using jQuery?
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Where do I find those jQuery functions?
– Felipe Barreiros
Dec 17 '09 at 12:14
26
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Automatically remove Subversion unversioned files
Does anybody know a way to recursively remove all files in a working copy that are not under version control? (I need this to get more reliable results in my automatic build VMware.)
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How do you reverse a string in place in JavaScript?
How do you reverse a string in place (or in-place) in JavaScript when it is passed to a function with a return statement, without using built-in functions ( .reverse() , .charAt() etc.)?
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Build query string for System.Net.HttpClient get
...es.
Is there any simple api available to build the query string that
doesn't involve building a name value collection and url encoding
those and then finally concatenating them?
Sure:
var query = HttpUtility.ParseQueryString(string.Empty);
query["foo"] = "bar<>&-baz";
query["bar...