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what is the preferred way to mutate a React state?
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As much as I appreciate the idea behind immutability helpers (and I may end up using it anyway), Array.concat sure beats adding another library.
– Shawn Erquhart
Jan 2 '16 at 18:25
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How can I check the size of a collection within a Django template?
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A list is considered to be False if it has no elements, so you can do something like this:
{% if mylist %}
<p>I have a list!</p>
{% else %}
<p>I don't have a list!</p>
{% endif %}
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Fastest Way of Inserting in Entity Framework
...ework 4, and AutoDetectChangesEnabled is part of the 4.1, nevertheless, i did the performance test and i had AMAZING RESULTS, it went from 00:12:00 to 00:00:22 SavinChanges on each entity was doing the olverload... THANKS so much for your answare! this is what i was looking for
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Record file copy operation with Git
...t the file has been renamed and even if I alter some portions it still considers to be almost the same thing (which is good because it lets me follow the history of it).
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seek() function?
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Never forget that when managing files, there'll always be a position inside that file where you are currently working on. When just open, that position is the beginning of the file, but as you work with it, you may advance.
seek will be useful to you when you need to walk along that open file, ju...
How can I show the name of branches in `git log`?
...swered Jun 15 '18 at 11:05
Android ControlAndroid Control
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What's the difference between and
...;?> is reifiable while <? extend object> is not. The reason they did this is to make it easier to distinguish reifiable type. Anything that looks like <? extends something>,<T>,<Integer> are nonreifiable.
For example, this code would work
List aList = new ArrayList&...
instanceof Vs getClass( )
... things.
instanceof tests whether the object reference on the left-hand side (LHS) is an instance of the type on the right-hand side (RHS) or some subtype.
getClass() == ... tests whether the types are identical.
So the recommendation is to ignore the performance issue and use the alternative th...
What size do you use for varchar(MAX) in your parameter declaration?
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Varchar(max) is treated identically to varchar(8000) for values less than 8000 bytes. For larger values the field is treated as a "text" field (aka a "CLOB"). This can affect query plan optimization and the efficiency of retrieving rows with larger ...
What's the difference between the four File Results in ASP.NET MVC
...ame), result.Attachment.FileName);
Seemed good. Worked fine in IE. So I did some research and tried implementing FileStreamResult instead (keeping the Content-Disposition setter):
MemoryStream dataStream = new MemoryStream();
dataStream.Write(result.Attachment.Data, 0, result.Attachment.Data.Leng...