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What is the difference between parseInt() and Number()?
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Well, they are semantically different, the Number constructor called as a function performs type conversion and parseInt performs parsing, e.g.:
// parsing:
parseInt("20px"); // 20
parseInt("10100", 2); // 20
parseInt("2e1"); // 2
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Bash script processing limited number of commands in parallel
... the exit status of the last
command waited for. If a job spec is given, all processes in the job
are waited for. If no arguments are given, all currently active child
processes are waited for, and the return status is zero. If neither
jobspec nor pid specifies an active child process of the...
return query based on date
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You probably want to make a range query, for example, all items created after a given date:
db.gpsdatas.find({"createdAt" : { $gte : new ISODate("2012-01-12T20:15:31Z") }});
I'm using $gte (greater than or equals), because this is often used for date-only queries, where the t...
Reflection: How to Invoke Method with parameters
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Change "methodInfo" to "classInstance", just like in the call with the null parameter array.
result = methodInfo.Invoke(classInstance, parametersArray);
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How to skip “Loose Object” popup when running 'git gui'
...og. I found the hint_gc procedure which does it and the place where it is called. At the same time I noticed that late 2011 there was added a configuration option for disabling the dialog. This change (part of git-gui 0.16.0) was merged to Git's mainline on 2011-12-14.
So if you use Git v1.7.9 or n...
How to prevent UINavigationBar from covering top of view in iOS 7?
After updating to Xcode 5, the navigation bars in all of my app's views have shifted down. Here are some screenshots, the first showing everything in the view as it's pulled down, and the second showing all of it untouched. The search bar should begin where the navigation bar.
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How to tell if a string contains a certain character in JavaScript?
...tion does. There are a lot of people who don't understand regex, and generally the simpler answer is the best.
– kemiller2002
Oct 13 '15 at 19:19
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What is the difference between min SDK version/target SDK version vs. compile SDK version?
...e earliest release of the Android SDK that your application can run on. Usually this is because of a problem with the earlier APIs, lacking functionality, or some other behavioural issue.
The target sdk version is the version your application was targeted to run on. Ideally, this is because of some...
Understanding FFT output
...sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the first entry in your array. That is your DC offset and carries no frequency dependent information).
You get 32 real and 32 imaginary outputs because you are using a ...
How to get nth jQuery element
...epends on the desired behavior. $('select').find('option').eq(n) will basically ignore the grouping, and get all options as a whole. If you want it per group, something like this is necessary: $('select').find('optgroup').each(function() { $(this).find('option').eq(n)...; })
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