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'const int' vs. 'int const' as function parameters in C++ and C
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K&R C didn't have const; C90 (and C99) does. It's a bit limited compared to C++, but it is useful.
– Mark Baker
Oct 2 '08 at 14:21
1
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How can I echo HTML in PHP?
...iable ?>
<?php /* A comment not visible in the HTML, but it is a bit of a pain to write */ ?>
<?php else: ?>
<!-- else -->
<?php endif; ?>
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Can ordered list produce result that looks like 1.1, 1.2, 1.3 (instead of just 1, 2, 3, …) with css?
... by deleting the last "." from the content property, but this just looks a bit odd to me.
– slightlyfaulty
Aug 12 '14 at 18:20
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How was the first compiler written?
...ng way...
Sometimes this still happens to a small extent - to patch small bits of code or create thunks. I recall punching in numbers into Basic strings that were then executed as small, fast subroutines on early micros. I also remember toggling switches on a PDP-11's front panel to enter a bootl...
How do I delete rows in a data frame?
...a NOT, i.e. !TRUE == FALSE:
myData = myData[!row_to_keep,]
This seems a bit cumbersome in comparison to @mrwab's answer (+1 btw :)), but a logical vector can be generated on the fly, e.g. where a column value exceeds a certain value:
myData = myData[myData$A > 4,]
myData = myData[!myData$A &g...
How to detect UI thread on Android?
....getMainLooper().getThread() == Thread.currentThread()
but it could be a bit more readable and easier to remember.
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Jquery Ajax Posting json to webservice
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@Dreamguts: It is a bit unclear to me what you want. Do you want to send markers as JSON string?
– Felix Kling
Jun 12 '11 at 17:34
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How do I tokenize a string in C++?
...tions.
Instead, C++ offers a plethora of ways to split strings based on arbitrarily complex delimiters, but none of them is encapsulated as nicely as in other languages. The numerous ways fill whole blog posts.
At its simplest, you could iterate using std::string::find until you hit std::string::n...
Why is it considered a bad practice to omit curly braces? [closed]
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Actually, the only time that's ever really bit me was when I was debugging, and commented out bar():
if(foo)
// bar();
doSomethingElse();
Other than that, I tend to use:
if(foo) bar();
Which takes care of the above case.
EDIT Thanks for clarifying the questio...
What is the difference between `let` and `var` in swift?
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Very simple:
let is constant.
var is dynamic.
Bit of description:
let creates a constant. (sort of like an NSString). You can't change its value once you have set it. You can still add it to other things and create new variables though.
var creates a variable. (sort of...