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MySQL error: key specification without a key length
...oc/refman/5.0/en/char.html "Values in VARCHAR columns are variable-length strings. The length can be specified as a value from 0 to 255 before MySQL 5.0.3, and 0 to 65,535 in 5.0.3 and later versions. The effective maximum length of a VARCHAR in MySQL 5.0.3 and later is subject to the maximum row s...
Git 工具 - 子模块(submodule)：一个仓库包含另一个仓库 - 开源 & Github -...
... = xmalloc(sizeof(*alias_argv) * (argc + 1));
alias_argv[0] = alias_string + 1;
Entering 'DbConnector'
diff --git a/src/db.c b/src/db.c
index 1aaefb6..5297645 100644
--- a/src/db.c
+++ b/src/db.c
@@ -93,6 +93,11 @@ char *url_decode_mem(const char *url, int len)
return url_decod...
Why in Java 8 split sometimes removes empty strings at start of result array?
Before Java 8 when we split on empty string like
3 Answers
3
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Inheriting from a template class in c++
... create objects from any other class). Another such class would be Area<char>. Note that those are completely different classes, which have nothing in common except for the fact that they were generated from the same class template.
Since Area is not a class, you cannot derive the class Recta...
Remove directory which is not empty
...amed function to rimraf ;)
/**
* Remove directory recursively
* @param {string} dir_path
* @see https://stackoverflow.com/a/42505874/3027390
*/
function rimraf(dir_path) {
if (fs.existsSync(dir_path)) {
fs.readdirSync(dir_path).forEach(function(entry) {
var entry_path = ...
Validating IPv4 addresses with regexp
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@PriteshAcharya Works fine over here.
– Kid Diamond
Mar 15 '18 at 13:27
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MySQL - Rows to Columns
...le of years late, I had to use MAX instead of SUM because my itemValue are strings, not numerical values.
– Merricat
Jun 17 at 17:55
add a comment
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Why do we need fibers
...> #<Enumerator: [1, 2, 3]:reverse_each>
irb(main):002:0> "abc".chars
=> #<Enumerator: "abc":chars>
irb(main):003:0> 1.upto(10)
=> #<Enumerator: 1:upto(10)>
These Enumerators are Enumerable objects, and their each methods yield the elements which would have been yie...
How can I get file extensions with JavaScript?
...not a path, for practical reasons, I think it should be return filename.substring(0,1) === '.' ? '' : filename.split('.').slice(1).pop() || ''; This takes care of .file (Unix hidden, I believe) kind of files too. That is if you want to keep it as a one-liner, which is a bit messy to my taste.
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Why use static_cast(x) instead of (int)x?
...pointer to a different type, and then dereferencing. Except in the case of character types or certain struct types for which C defines the behavior of this construct, it generally results in undefined behavior in C.
– R.. GitHub STOP HELPING ICE
Feb 4 '12 at 5:...