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nil detection in Go
...his initialization is done recursively, so for instance each element of an array of structs will have its fields zeroed if no value is specified.
As you can see, nil is not the zero value for every type but only for pointers, functions, interfaces, slices, channels and maps. This is the reason why...
What does $$ (dollar dollar or double dollar) mean in PHP?
... While I agree that it can be useful, most of the times it's better to use arrays anyway.
– o0'.
Apr 26 '10 at 18:31
s...
How can I prevent SQL injection in PHP?
... and chosen from that set.
For example, to do dynamic ordering:
$orders = array("name", "price", "qty"); // Field names
$key = array_search($_GET['sort'], $orders)); // if we have such a name
$orderby = $orders[$key]; // If not, first one will be set automatically.
$query = "SELECT * FROM `table` ...
Java: splitting a comma-separated string but ignoring commas in quotes
...ual=\"baz,blurb\",d;junk=\"quux,syzygy\"";
List<String> result = new ArrayList<String>();
int start = 0;
boolean inQuotes = false;
for (int current = 0; current < input.length(); current++) {
if (input.charAt(current) == '\"') inQuotes = !inQuotes; // toggle state
boolean atLa...
SQL query to get all values a enum can have
...
If you want an array:
SELECT enum_range(NULL::myenum)
If you want a separate record for each item in the enum:
SELECT unnest(enum_range(NULL::myenum))
Additional Information
This solution works as expected even if your enum is no...
Print second last column/field in awk
...them back in afterwards
a autosplit mode – split input lines into the @F array. Defaults to splitting on whitespace
e execute the perl code
The @F autosplit array starts at index [0] while awk fields start with $1.
$#F is the number of elements in @F
...
What should every JavaScript programmer know? [closed]
...p using eval, thanks); that object properties are always strings (even for arrays); what for...in is for (and what it isn't).
Property-sniffing; what undefined is (and why it smells); why the seemingly-little-known in operator is beneficial and different from typeof/undefined checks; hasOwnProperty;...
How do I check if there are duplicates in a flat list?
...
often doesn't work for array of floating points.See stackoverflow.com/questions/60914705
– Manas Dogra
Mar 29 at 14:44
add ...
What is the “main file” property when doing bower init?
...to the Bower.io documentation
main
Recommended Type: String or Array of String
The primary acting files necessary to use your package. While Bower
does not directly use these files, they are listed with the
commands bower list --json andbower list --paths, so they can be use...
How do I execute a command and get the output of the command within C++ using POSIX?
...memory>
#include <stdexcept>
#include <string>
#include <array>
std::string exec(const char* cmd) {
std::array<char, 128> buffer;
std::string result;
std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
if (!pipe) {
thr...