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What is the difference between sigaction and signal?
... And that's it. Anything else is not guaranteed to be portable. That's so stringent that most people ignore those rules — but the resulting code is dodgy.
– Jonathan Leffler
Oct 27 '16 at 16:14
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How to read a file into a variable in shell?
...t;"$FILE")"
printf "$S" | od -tx1
rm "$FILE"
POSIX workaround: append an extra char to the command expansion and remove it later:
S="$(cat $FILE; printf a)"
S="${S%a}"
printf "$S" | od -tx1
Outputs:
0000000 61 0a 0a
0000003
Almost POSIX workaround: ASCII encode. See below.
NUL character rem...
Convert pem key to ssh-rsa format
...PubKey = NULL;
RSA* pRsa = NULL;
BIO *bio, *b64;
ERR_load_crypto_strings();
OpenSSL_add_all_algorithms();
if (argc != 3)
{
printf("usage: %s public_key_file_name ssh_key_description\n", argv[0]);
iRet = 1;
goto error;
}
pFile = fopen(argv[1], "rt");
i...
How to trim a string in SQL Server before 2017?
...lls. You could say they are all redundant since TSQL has CHARINDEX and SUBSTRING, but that's an idiotic way to look at it.
– Ben Hoffstein
Oct 8 '08 at 14:02
10
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How to color System.out.println output? [duplicate]
...llowing will NOT color output in JavaScript in the Web Console
console.log(String.fromCharCode(27) + "[36mCYAN");
console.log("\x1b[30;47mBLACK_ON_WHITE");
Note that \x1b also works in node
In Shell Prompt OR Scripts
If you are working with bash or zsh, it is quite easy to color the output (i...
MD5 algorithm in Objective-C
...
md5 is available on the iPhone and can be added as an addition for ie NSString and NSData like below.
MyAdditions.h
@interface NSString (MyAdditions)
- (NSString *)md5;
@end
@interface NSData (MyAdditions)
- (NSString*)md5;
@end
MyAdditions.m
#import "MyAdditions.h"
#import <CommonCrypto...
How do I count the number of occurrences of a char in a String?
I have the string
45 Answers
45
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C++ performance challenge: integer to std::string conversion
Can anyone beat the performance of my integer to std::string code, linked below?
13 Answers
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What are the main performance differences between varchar and nvarchar SQL Server data types?
...ormance can be...
SQL Server uses high CPU when searching inside nvarchar strings
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String literals: Where do they go?
I am interested in where string literals get allocated/stored.
8 Answers
8
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