大约有 43,000 项符合查询结果（耗时：0.0502秒） [XML]
Return a “NULL” object if search result not found
...return something that might exist. Here are some options, ranging from my least preferred to most preferred:
Return by reference, and signal can-not-find by exception.
Attr& getAttribute(const string& attribute_name) const
{
//search collection
//if found at i
return attri...
Number of rows affected by an UPDATE in PL/SQL
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SQL%ROWCOUNT can also be used without being assigned (at least from Oracle 11g).
As long as no operation (updates, deletes or inserts) has been performed within the current block, SQL%ROWCOUNT is set to null. Then it stays with the number of line affected by the last DML operation...
Android basics: running code in the UI thread
...nd(), before eventually doing what amounts to a post(). This is by far the least efficient of the three. Use AsyncTask if you actually have work to do in a background thread, not just for the use of onPostExecute().
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In Javascript, how to conditionally add a member to an object?
... going on – I wouldn’t be sure what happens with a primitive value (at least not without looking at the spec).
– Axel Rauschmayer
May 11 '17 at 8:56
2
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HTTP could not register URL http://+:8000/HelloWCF/. Your process does not have access rights to thi
...iggin MS, making different functionality that fights itself. So much for 'least privilege'.
– Dan Csharpster
Sep 12 '13 at 20:56
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Why don't they teach these things in school? [closed]
...s that have equivalent expertise, using different techniques. At the very least we'd need lots of data about existing projects which those projects would be unwilling to release.
Civil engineers have thousands of years of bridges to look at, with lots of information. Software developers, on the o...
Order Bars in ggplot2 bar graph
...got the bad advice to use levels<-. I'm going to edit that part out, at least tentatively.
– Gregor Thomas
Feb 18 '19 at 23:03
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How to check whether a string is Base64 encoded or not
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Parsing differs from validation at least by the fact that it require memory for decoded byte array. So this is not the most effective approach in some cases.
– Victor Yarema
Sep 22 '19 at 12:36
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Find the last element of an array while using a foreach loop in PHP
... and not always accurate when comparing strings to integers (you should at least have used ===). Im voting this down.
– OIS
Apr 1 '09 at 11:10
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GCC dump preprocessor defines
...e point is to have cmd line that works equally well on windows and unix at least. If you use NUL, you are back to square one: it won't work on systems that do not have it.
– Pavel P
Jan 29 '14 at 18:42
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