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How to loop through a HashMap in JSP?
...ctice. I recommend to install JSTL (just drop the JAR file in /WEB-INF/lib and declare the needed taglibs in top of JSP). It has a <c:forEach> tag which can iterate over among others Maps. Every iteration will give you a Map.Entry back which in turn has getKey() and getValue() methods.
Here's ...
Example for sync.WaitGroup correct?
...rrect? It gives the expected result, but I am unsure about the wg.Add(4) and the position of wg.Done() . Does it make sense to add the four goroutines at once with wg.Add() ?
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How do I get AWS_ACCESS_KEY_ID for Amazon?
...ited Dec 17 '15 at 0:20
New Alexandria
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answered Jan 29 '14 at 21:46
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How can I make Array.Contains case-insensitive on a string array?
...her "Culture" aware comparisons are concerned with ordering of characters, and are therefore only relevant for sorting.
– user1751825
Feb 20 at 11:51
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How can I list (ls) the 5 last modified files in a directory?
...ed files:
ls -1t | head -5
The -1 (that's a one) says one file per line and the head says take the first 5 entries.
If you want the last 5 try
ls -1t | tail -5
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What to add for the update portion in ConcurrentDictionary AddOrUpdate
...f an update. I guess in your case (since you don't distinguish between add and update) this would be:
var sessionId = a.Session.SessionID.ToString();
userDic.AddOrUpdate(
authUser.UserId,
sessionId,
(key, oldValue) => sessionId);
I.e. the Func always returns the sessionId, so that both A...
Why is \r a newline for Vim?
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For me the point of confusion is that \r and \n mean different things when used is the search pattern and the replacement pattern.
– dlamblin
Dec 4 '12 at 17:09
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Using CMake with GNU Make: How can I see the exact commands?
I use CMake with GNU Make and would like to see all commands exactly (for example how the compiler is executed, all the flags etc.).
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jQuery hide element while preserving its space in page layout
...style to none, which completely removes the element from the document flow and causes it to not take up space.
visibility:hidden keeps the space as it is.
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Async/Await vs Threads
...b done. Ideally it doesn't use a thread at all, it posts a driver request and once the driver completes the data transfer it generates a completion notification callback. Networking is by far the most common usage, latencies of hundreds of milliseconds are common and an inevitable side-effect of s...