大约有 47,000 项符合查询结果(耗时:0.0387秒) [XML]
How to get a one-dimensional scalar array as a doctrine dql query result?
...as callback, instead of writing a closure.
$result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult();
$ids = array_map('current', $result);
See Petr Sobotka's answer below for additional info regarding memory usage.
PHP >= 5.5
As jcbwlkr's answered below, the rec...
How to set the java.library.path from Eclipse
... has items for source/javadoc and native library locations.
Specifically: select Project, right click -> Properties / Java Build Path / Libraries tab, select a .jar, expand it, select Native library location, click Edit, folder chooser dialog will appear)
Messing with the library path on the co...
Asp.net - Add blank item at top of dropdownlist
...drpList.Items.Insert(0, new ListItem(String.Empty, String.Empty));
drpList.SelectedIndex = 0;
share
|
improve this answer
|
follow
|
...
How random is JavaScript's Math.random?
...
90 have 2 digits
900 have 3 digits
1 has 4 digits
and so on.
So if you select some at random, then that vast majority of selected numbers will have the same number of digits, because the vast majority of possible values have the same number of digits.
...
Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
...al letters represent the negation of their lowercase counterparts.
\W will select all non "word" characters equivalent to [^a-zA-Z0-9_]
\S will select all non "whitespace" characters equivalent to [ \t\n\r\f\v]
_ will select "_" because we negate it when using the \W and need to add it back in
...
Search code inside a Github project
...valid search query. Try quoting it." is gone when using the default search selector "Everything":)
(I suppose we can all than Tim Pease, which had in one of his objectives "hacking on improved search experiences for all GitHub properties", and I did mention this Stack Overflow question at the time ...
How can I update my ADT in Eclipse?
... to 23.0 or to 23.0.2 getting dependency issue when trying to Click (after selecting the developer tools and selecting the Same path https:// as above)
– user285oo6
Aug 18 '14 at 6:31
...
What is the difference between synchronous and asynchronous programming (in node.js)
...xamples:
// Example 1 - Synchronous (blocks)
var result = database.query("SELECT * FROM hugetable");
console.log("Query finished");
console.log("Next line");
// Example 2 - Asynchronous (doesn't block)
database.query("SELECT * FROM hugetable", function(result) {
console.log("Query finished")...
Intellij idea cannot resolve anything in maven
...ugh Settings --> Maven --> Importing and made sure the following was selected:
Import Maven projects automatically
Create IDEA modules for aggregator projects
Keep source...
Exclude build dir...
Use Maven output...
Generated souces folders: "detect automatically"
Phase to be...: "process-res...
MIN/MAX vs ORDER BY and LIMIT
...oks like MIN() is able to simply pluck the smallest value from the index ('Select tables optimized away' and 'NULL' rows) whereas the SORT and LIMIT still needs needs to do an ordered traversal of the index (106,000 rows). The actual performance impact is probably negligible.
It looks like MIN() i...
