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What is Full Text Search vs LIKE
...stance this SQL could be fired to extract all rows matching the given word XYZ:
SELECT *
FROM my_table
WHERE MATCH (my_text_column) against ('XYZ' IN boolean mode) ;
Caveat: If you add ORDER BY to this query, your runtimes will vary based on the several parameters, one of which is the number...
Reference - What does this error mean in PHP?
...all to a member function ... on a non-object
Happens with code similar to xyz->method() where xyz is not an object and therefore that method can not be called.
This is a fatal error which will stop the script (forward compatibility notice: It will become a catchable error starting with PHP 7).
...
JavaScript: What are .extend and .prototype used for?
...base2 and Prototype
(function(){
var initializing = false, fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
// The base Class implementation (does nothing)
this.Class = function(){};
// Create a new Class that inherits from this class
Class.extend = function(prop) {
v...
What is an efficient way to implement a singleton pattern in Java? [closed]
... answered May 16 '13 at 6:24
xyzxyz
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...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...f the elements contain spaces.
For example:
$ groups=("abc def" " pqr xyz ")
$ printf "X%sX\n" ${groups[@]}
XabcX
XdefX
XpqrX
XxyzX
$ printf "X%sX\n" "${groups[@]}"
Xabc defX
X pqr xyz X
$ printf "X%sX\n" $groups
XabcX
XdefX
$ printf "X%sX\n" "$groups"
Xabc defX
$
Using * instead of @ lea...
淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...中。
按照某种维度建的索引产生热点数据，比如实时搜索中按照商品维度关联评价数据，有些热点商品的评价非常多，导致搜索系统按照商品ID建评价数据的索引时内存已经放不下，交易维度关联订单信息也同样有这些问题...
How to un-submodule a Git submodule?
...f it's the only submodule, remove the file.
do a commit "removed submodule xyz"
git add the_submodule_path
another commit "added codebase of xyz"
I didn't find any easier way yet. You can compress 3-5 into one step via git commit -a - matter of taste.
...
How can I recover a lost commit in Git?
...und
This will output something like at the last line:
dangling commit xyz
We can check that it is the same commit using reflog as suggested in other answers. Now we can do a git merge
git merge xyz
Note:
We cannot get the commit back with fsck if we have already run a git gc command which ...
How do I work with a git repository within another repository?
...EDIA
git pull
cd ..
git add MEDIA
git commit -m "Upgraded media to version XYZ"
This just recorded the fact that the MEDIA submodule WITHIN PROJECT2 is now at version XYZ.
It gives you 100% control over what version of MEDIA each project uses. git submodules are great, but you need to experiment...
Match multiline text using regular expression
...xpects the regex to match the entire string.
Pattern p = Pattern.compile("xyz");
Matcher m = p.matcher("123xyzabc");
System.out.println(m.find()); // true
System.out.println(m.matches()); // false
Matcher m = p.matcher("xyz");
System.out.println(m.matches()); // true
Furthermore, MULTILINE d...