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How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
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Please note that Indexes into a String do NOT refer to Unicode code points anymore. Think of them as referencing user-perceived characters.
– JanX2
Aug 20 '14 at 10:05
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How do I download a package from apt-get without installing it? [closed]
... , and I want to install some programs in it via USB memory, but how can I download a program from apt-get without installing it?
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How do you dismiss the keyboard when editing a UITextField
... the keyboard, but I'm not sure how to know when the user has pressed the "Done" key on the keyboard. Is there a notification I can watch for?
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Checkout old commit and make it a new commit [duplicate]
...its, and I want to make the version 3 commits ago as the new version. If I do git checkout xxxx , it creates a new branch and it seems like I can only merge it? Could I make this the new "master version"?
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Why is it necessary to set the prototype constructor?
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It's not always necessary, but it does have its uses. Suppose we wanted to make a copy method on the base Person class. Like this:
// define the Person Class
function Person(name) {
this.name = name;
}
Person.prototype.copy = function() {
// r...
How can I reliably determine the type of a variable that is declared using var at design time?
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I can describe for you how we do that efficiently in the "real" C# IDE.
The first thing we do is run a pass which analyzes only the "top level" stuff in the source code. We skip all the method bodies. That allows us to quickly build up a database of inf...
How do you performance test JavaScript code?
...to place a second later. Overall, it took slightly more processing time to do it that way, but to the user, the perceived performance was improved.
These days, the Chrome profiler and other tools are universally available and easy to use, as are console.time(), console.profile(), and performance....
How do you add Boost libraries in CMakeLists.txt?
I need to add Boost libraries into my CMakeLists.txt. How do you do it or how do you add it?
7 Answers
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How do I force make/GCC to show me the commands?
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To invoke a dry run:
make -n
This will show what make is attempting to do.
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How do I get the full path of the current file's directory?
...ng a python script that is in a file.
References
pathlib in the python documentation.
os.path 2.7, os.path 3.8
os.getcwd 2.7, os.getcwd 3.8
what does the __file__ variable mean/do?
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