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How does database indexing work? [closed]
...iven that creating an index requires additional disk space (277,778 blocks extra from the above example, a ~28% increase), and that too many indices can cause issues arising from the file systems size limits, careful thought must be used to select the correct fields to index.
Since indices are only...
unsigned int vs. size_t
...ead of int / unsigned int pretty much everywhere - from parameters for C string functions to the STL. I am curious as to the reason for this and the benefits it brings.
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How to manually expand a special variable (ex: ~ tilde) in bash
...xpanded by a bash script in that manner because it is treated as a literal string "~". You can force expansion via eval like this.
#!/bin/bash
homedir=~
eval homedir=$homedir
echo $homedir # prints home path
Alternatively, just use ${HOME} if you want the user's home directory.
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An efficient compression algorithm for short text strings [closed]
I'm searching for an algorithm to compress small text strings: 50-1000 bytes (i.e. URLs). Which algorithm works best for this?
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Convert a char to upper case using regular expressions (EditPad Pro)
...ssion in hope that I will be able to replace every match (that is just one char) to upper case char. I am using EditPad Pro (however I am willing to use any other tool that would allow me to do this, as long as it is free to try, since I only need to do this once).
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Check substring exists in a string in C
I'm trying to check whether a string contains a substring in C like:
12 Answers
12
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How do I split a string into an array of characters? [duplicate]
I want to string.split a word into array of characters.
8 Answers
8
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How to concatenate a std::string and an int?
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In alphabetical order:
std::string name = "John";
int age = 21;
std::string result;
// 1. with Boost
result = name + boost::lexical_cast<std::string>(age);
// 2. with C++11
result = name + std::to_string(age);
// 3. with FastFormat.Format
fastf...
vs vs for inline and block code snippets
...dd the class. Doing it any other way will still be asking the user to type extra. This way the user can think of it as adding a special tag rather than using a completely different structure.
– slebetman
Jan 9 '11 at 0:19
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How can I convert a std::string to int?
... a few solutions but none of them have worked yet. Looking at converting a string to an int and I don't mean ASCII codes.
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