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Deleting lines from one file which are in another file
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This has O(n²) complexity and will start to take hours to complete once the files contain more than a few K lines.
– Arnaud Le Blanc
Jan 24 '11 at 10:59
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Boolean operators && and ||
According to the R language definition , the difference between & and && (correspondingly | and || ) is that the former is vectorized while the latter is not.
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ViewPager.setOffscreenPageLimit(0) doesn't work as expected
...them, with the animated effect showing the old view sliding off the screen and the new view sliding onto the screen. You are welcome to try to write your own ViewPager that can swipe between things that do not exist. You can read more about this at code.google.com/p/android/issues/detail?id=56667#c3...
How to efficiently concatenate strings in go
In Go, a string is a primitive type, which means it is read-only, and every manipulation of it will create a new string.
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How do I update Node.js?
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Use Node Version Manager (NVM)
It's a Bash script that lets you download and manage different versions of node. Full source code is here.
There is a separate project for nvm for Windows: github.com/coreybutler/nvm-windows
Below are the full steps to use NVM for multiple version of node on window...
How to set username and password for SmtpClient object in .NET?
...of the constructor, one uses info from web.config, one specifies the host, and one the host and port. But how do I set the username and password to something different from the web.config? We have the issue where our internal smtp is blocked by some high security clients and we want to use their smt...
In C, how should I read a text file and print all strings
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The simplest way is to read a character, and print it right after reading:
int c;
FILE *file;
file = fopen("test.txt", "r");
if (file) {
while ((c = getc(file)) != EOF)
putchar(c);
fclose(file);
}
c is int above, since EOF is a negative number, an...
Border length smaller than div width?
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if the width of the bottom border is 50% and you want it centered, the style needs to be left: 25% since it will be 25% + 50% + 25%
– skift
Nov 7 '14 at 19:02
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HttpSecurity, WebSecurity and AuthenticationManagerBuilder
...plain when to override configure(HttpSecurity) , configure(WebSecurity) and configure(AuthenticationManagerBuilder) ?
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How to automatically generate a stacktrace when my program crashes
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For Linux and I believe Mac OS X, if you're using gcc, or any compiler that uses glibc, you can use the backtrace() functions in execinfo.h to print a stacktrace and exit gracefully when you get a segmentation fault. Documentation can...