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c++ boost::multi_index composite keys efficiency - c++1y / stl - 清泛IT社区，为创新赋能！
...performed by the first key, then the second key if the first one is equal, etc". Does this mean that the structure is stored such that a lookup for a specific 2-part composite key will take O(n=1) time, i.e. is the container sorted such that there is a pointer directly to each item, or does the...
Checking if sys.argv[x] is defined
...s as the first argument each time and 2) you can call results with args[0] etc.
– Matt D
Nov 28 '17 at 3:23
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CSS, Images, JS not loading in IIS
...d/or add a web.config in the directory(s) containing CSS, images, scripts, etc. which specifies authorization rules.
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Understanding Spliterator, Collector and Stream in Java 8
...to work on one part of the collection, one thread to work on another part, etc.
You should essentially never be saving values of type Stream to a variable, either. Stream is sort of like an Iterator, in that it's a one-time-use object that you'll almost always use in a fluent chain, as in the Java...
How to remove “Server name” items from history of SQL Server Management Studio
...onnect Object Explorer, Object Explorer-> Connect-> Database Engine, etc).
Click on the Server Name field drop down list’s down arrow.
Hover over the items you want to remove.
Press the delete (DEL) key on your keyboard.
there we go.
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Go to back directory browsing after opening file in vim
... look forward to "go back" from nested navigations (jumped to another file etc.).
– Tomasz Gandor
Jan 8 '19 at 21:21
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Restore Eclipse subversion project connection
...w, which is a log of Eclipse's various errors (class-not-found exceptions, etc.) and see if there are any lines that related to the Subversive components. Unfortunately, I can't really recommend a solution-- on my Mac OSX platform it was enough to re-install the Subversive core elements and connecto...
Iterate over a list of files with spaces
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Seems like pointing out the obvious, but in nearly all simple cases, -exec is going to be cleaner than an explicit loop: find . -iname "foo*" -exec echo "File found: {}" \;. Plus, in many cases you can replace that last \; with+ to put lots of files in the one command.
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What does ':' (colon) do in JavaScript?
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var o = {
r: 'some value',
t: 'some other value'
};
is functionally equivalent to
var o = new Object();
o.r = 'some value';
o.t = 'some other value';
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Multiline TextView in Android?
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If the text you're putting in the TextView is short, it will not automatically expand to four lines. If you want the TextView to always have four lines regardless of the length of the text in it, set the android:lines attribute:
<TextView
android:id="@+id/address1"
android:gravity="left...