大约有 15,210 项符合查询结果（耗时：0.0305秒） [XML]
“Debug only” code that should run only when “turned on”
...make it static to persist the same value for the life of the program (or thread depending on your static memory model), or make it an ordinary instance var to control it over the life of an object instance. If that instance is a singleton, they'll behave the same way.
#if DEBUG
private /*static*/ b...
Send attachments with PHP Mail()?
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I was the same - wanted to use mail() just because I already had it in my code. PHPMAILER took me less than 5 minutes to getting send attachments!
– James Wilson
Dec 12 '13 at 10:28
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Catch an exception thrown by an async void method
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It's somewhat weird to read but yes, the exception will bubble up to the calling code - but only if you await or Wait() the call to Foo.
public async Task Foo()
{
var x = await DoSomethingAsync();
}
public async void DoFoo()
{
try
{
...
When to use reinterpret_cast?
...the applicability of reinterpret_cast vs static_cast . From what I have read the general rules are to use static cast when the types can be interpreted at compile time hence the word static . This is the cast the C++ compiler uses internally for implicit casts also.
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How does Java Garbage Collection work with Circular References?
...as the following GC roots:
Local variables in the main method
The main thread
Static variables of the main class
To determine which objects are no longer in use, the JVM intermittently runs what is very aptly called a mark-and-sweep algorithm. It works as follows
The algorithm traverses all ...
Remove .php extension with .htaccess
Yes, I've read the Apache manual and searched here. For some reason I simply cannot get this to work. The closest I've come is having it remove the extension, but it points back to the root directory. I want this to just work in the directory that contains the .htaccess file.
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How to compute the similarity between two text documents?
...larsmans Can you explain the array little bit if possible, how should I be reading this array. First two columns are similarity between First two sentences?
– add-semi-colons
Aug 25 '12 at 0:47
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Adding asterisk to required fields in Bootstrap 3
..."" id="id_tos" name="tos" required="required" type="checkbox" /> I have read and agree to the Terms of Service
</label>
</div>
</div>
</div>
Ok third edit:
CSS back to what is was
.form-group.required .control-label:after {
content:"*";
colo...
JOIN queries vs multiple queries
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I actually came to this question looking for an answer myself, and after reading the given answers I can only agree that the best way to compare DB queries performance is to get real-world numbers because there are just to many variables to be taken into account BUT, I also think that comparing th...
Hand Coded GUI Versus Qt Designer GUI [closed]
I'm spending these holidays learning to write Qt applications. I was reading about Qt Designer just a few hours ago, which made me wonder : what do people writing real world applications in Qt use to design their GUIs? In fact, how do people design GUIs in general?
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