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Sequence-zip function for c++11?
...ers are not the same (it may crash or iterate beyond the end).
Starting from Boost 1.56.0 (2014 Aug 7) you could use boost::combine (the function exists in earlier versions but undocumented):
#include <boost/range/combine.hpp>
#include <vector>
#include <list>
#include <stri...
How to change a field name in JSON using Jackson
...ation.JsonProperty in Jackson 2.x. Check which ObjectMapper you are using (from which version), and make sure you use the proper annotation.
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Why are local variables not initialized in Java?
... warning is an awesome multi-path bad programmer checker that has saved me from doing stupid stuff since it checks every path and makes sure that if you used the variable in some path then you had to initialize it in every path that lead up to it. I now never explicitly initialize variables until I...
How do you dynamically add elements to a ListView on Android?
... If element in ArrayList is more complicated such as loading from Internet and each item contains image video and something like that,would this approach face performance hit?
– zionpi
Feb 18 '16 at 8:30
...
What is a race condition?
...act. You have no real way of knowing.
In order to prevent race conditions from occurring, you would typically put a lock around the shared data to ensure only one thread can access the data at a time. This would mean something like this:
// Obtain lock for x
if (x == 5)
{
y = x * 2; // Now, not...
node.js fs.readdir recursive directory search
...
Beware, the "parallel loop" answer from chjj above has a bug in cases when an empty folder is walked. The fix is: var pending = list.length; if(!pending)done(null, results); // add this line! list.forEach(function(file) { ...
– Vasil Dask...
CSS customized scroll bar in div
...kit.org/blog/363/styling-scrollbars/
Demo of all WebKit scroll bar styling
From Custom scrollbars in WebKit, relevant CSS:
/* pseudo elements */
::-webkit-scrollbar { }
::-webkit-scrollbar-button { }
::-webkit-scrollbar-track { }
::-webkit-scrollbar-track-piece { }
::...
How to use FormData for AJAX file upload?
...must be sent via POST request.
Note: contentType: false only available from jQuery 1.6 onwards
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@Basic(optional = false) vs @Column(nullable = false) in JPA
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@Xie Jilei: From book: Java persistence with hibernate 2007, p. 179: @Basic(optional = false) @Column(nullable = false) The @Basic annotation marks the property as not optional on the Java object level. The second setting, nullable = f...
Confirm deletion in modal / dialog using Twitter Bootstrap?
...p 3.0.0
The simplest possible example:
bootbox.alert("Hello world!");
From the site:
The library exposes three methods designed to mimic their native JavaScript equivalents. Their exact method signatures are flexible as each can take various parameters to customise labels and specify defaul...