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How can I use “sizeof” in a preprocessor macro?
... sizeof(someThing) equals PAGE_SIZE; otherwise they will produce a compile-time error.
1. C11 way
Starting with C11 you can use static_assert (requires #include <assert.h>).
Usage:
static_assert(sizeof(someThing) == PAGE_SIZE, "Data structure doesn't match page size");
2. Custom macro
I...
How to determine if a number is a prime with regex?
... == 3.
.?
The first part of the regex says, "any character, zero or one times". So basically, is there zero or one character-- or, per what I mentioned above, n == 0 || n == 1. If we have the match, then return the negation of that. This corresponds with the fact that zero and one are NOT prime.
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Creating a new DOM element from an HTML string using built-in DOM methods or Prototype
...nd node/jsdom: (which doesn't yet support <template> elements at the time of writing), use the following method. It's the same thing the libraries use to do to get DOM elements from an HTML string (with some extra work for IE to work around bugs with its implementation of innerHTML):
function...
What does a script-Tag with src AND content mean?
...re elegant ways to optionally load code, though it's been popular for some time to just dump everything plus the kitchen sink into the first page and hope caching delivers some efficiencies thereafter. E.g. the home page at Qantas is 24 mB.
– RobG
Sep 21 at 23:...
Pass correct “this” context to setTimeout callback?
How do I pass context into setTimeout ? I want to call this.tip.destroy() if this.options.destroyOnHide after 1000 ms. How can I do that?
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Is there an Eclipse plugin to run system shell in the Console? [closed]
...tware -> General Purpose Tools -> Remote System Explorer End-User Runtime.
– Glyph
Apr 29 '10 at 23:06
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LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?
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Title_Authors is a look up two things join at a time project results and continue chaining
DataClasses1DataContext db = new DataClasses1DataContext();
var queryresults = from a in db.Authors
joi...
Get week of year in JavaScript like in PHP
...nejan = new Date(now.getFullYear(), 0, 1);
let week = Math.ceil( (((now.getTime() - onejan.getTime()) / 86400000) + onejan.getDay() + 1) / 7 );
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Mercurial (hg) commit only certain files
... hg commit foo.c foo.h dir/
That just works and that's what I do all the time. You can also use the --include flag that you've found, and you can use it several times like this:
$ hg commit -I foo.c -I "**/*.h"
You can even use a fileset to select the files you want to commit:
$ hg commit "set...
How to calculate time in hours between two dates in iOS
How can I calculate the time elapsed in hours between two times (possibly occurring on different days) in iOS?
5 Answers
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