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How to profile a bash shell script slow startup?
.... Change the setting of PS4:
PS4='+ $EPOCHREALTIME\011 '
As pointed out by @pawamoy, you can use BASH_XTRACEFD to send the output of the trace to a separate file descriptor if you have Bash 4.1 or later. From this answer:
#!/bin/bash
exec 5> command.txt
BASH_XTRACEFD="5"
echo -n "hello "
s...
What are detached, persistent and transient objects in hibernate?
...esentation in the database and no identifier value is considered transient by Hibernate:
Person person = new Person();
person.setName("Foobar");
// person is in a transient state
A persistent instance has a representation in the database, an identifier value and is associated with a Session. You...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
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Starting in iOS7, the view controllers use full-screen layout by default. At the same time, you have more control over how it lays out its views, and that's done with those properties:
edgesForExtendedLayout
Basically, with this property you set which sides of your view can be extende...
PHP multidimensional array search by value
...th the same array given in the question. I want user's name from the array by passing id. Function findUserName(40489) should return 'Michael'. How its possible?
– Ashok Gujjar
Aug 31 '18 at 6:40
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What is __pycache__?
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When you run a program in python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensions wi...
Invalid date format specification in gemspec
...n windows, and I also referred to
this stackoverflow post and updated rubygems and rails. But nothing could solve the problem.
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How to format numbers by prepending 0 to single-digit numbers?
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This is definitely better than chopping strings by hand. More succinctly, and if your page might be used outside the US, you might want to tweak this to: (6).toLocaleString(undefined, {minimumIntegerDigits: 2})
– Mark Slater
Jun 21 '...
What is the difference between an int and an Integer in Java and C#?
...ut to summarize:
Objects provide facilities for polymorphism, are passed by reference (or more accurately have references passed by value), and are allocated from the heap. Conversely, primitives are immutable types that are passed by value and are often allocated from the stack.
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difference between scope and namespace of ruby-on-rails 3 routing
...what the difference is between a namespace and a scope in the routing of ruby-on-rails 3.
5 Answers
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Network usage top/htop on Linux
Is there a htop/top on Linux where I get to sort processes by network usage?
6 Answers
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