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mmap() vs. reading blocks
...ontain sets of variable length records. I've got a first implementation up and running and am now looking towards improving performance, particularly at doing I/O more efficiently since the input file gets scanned many times.
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Rounding up to next power of 2
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This thread is still well referenced but this answer (and most others) are highly outdated. CPUs have an instruction to help this (actually already at that time?). From : jameshfisher.com/2018/03/30/round-up-power-2.html uint64_t next_pow2(uint64_t x) { return x == 1 ? 1 : 1<...
Encoding URL query parameters in Java
...tricted to HTTP. Similarly, : is valid in a query string and should not be converted to %3B; a server can choose to interpret them differently.
– tc.
Mar 26 '13 at 18:38
1
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Can't install RMagick 2.13.1. Can't find MagickWand.h.
...irst of all, do you have imagemagick installed? If you're not sure, run
$ convert --version
If you do, you probably either installed it with fink or macports (maybe homebrew?). What is happening is that rvm can't find the imagemagick directory.
After reading
https://superuser.com/questions/36143...
Java: Clear the console
...ws, here is a clarification:
Runtime.getRuntime().exec("cls");
This command does not work, for two reasons:
There is no executable named cls.exe or cls.com in a standard Windows installation that could be invoked via Runtime.exec, as the well-known command cls is builtin to Windows’ command l...
Open file dialog box in JavaScript
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You should convert this to normal Javascript, JQuery isnt logical to use on such a small project ^_^
– Mister SirCode
Oct 11 '19 at 13:11
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Android: Share plain text using intent (to all messaging apps)
... * File imageFile = ...;
* Uri uriToImage = ...; // Convert the File to URI
* Intent shareImage = ShareCompat.IntentBuilder.from(activity)
* .setType("image/png")
* .setStream(uriToImage)
* .getIntent();
*/
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How to send SMS in Java
What are the possible ways to send and receive sms from Java application?
16 Answers
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How to use dashes in HTML-5 data-* attributes in ASP.NET MVC
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This problem has been addressed in ASP.Net MVC 3. They now automatically convert underscores in html attribute properties to dashes. They got lucky on this one, as underscores are not legal in html attributes, so MVC can confidently imply that you'd like a dash when you use an underscore.
For ex...
What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?
...at are the different cases when we use these three? Where should I use one and where should I not?
9 Answers
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