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How to establish a connection pool in JDBC?
...etAcquireIncrement(5);
cpds.setMaxPoolSize(20);
// The DataSource cpds is now a fully configured and usable pooled DataSource
But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer t...
Why generate long serialVersionUID instead of a simple 1L?
...glected to use a serialVersionUID before, and then made a change that you know should be compatible but which causes serialization to break.
See the Java Serialization Spec for more details.
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Does adding a duplicate value to a HashSet/HashMap replace the previous value
...
ah I get it now. I understood that the key is the element of the Set, but just realized that put() will only override the value, not the key. In this case, it's the same value put alongside the key again, which may or may not be better t...
Checkout subdirectories in Git?
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Sparse checkouts are now in Git 1.7.
Also see the question “Is it possible to do a sparse checkout without checking out the whole repository first?”.
Note that sparse checkouts still require you to download the whole repository, even though...
querySelector search immediate children
...= this.id; // remember current element id
this.id = 'ID_' + Date.now(); // assign new unique id
selectors = selectors.replace(/((^|,)\s*):scope/g, '$1#' + this.id); // replace :scope with #ID
var result = doc[method](selectors);
this.id = id; // restore previo...
Javascript : natural sort of alphanumerical strings
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This is now possible in modern browsers using localeCompare. By passing the numeric: true option, it will smartly recognize numbers. You can do case-insensitive using sensitivity: 'base'. Tested in Chrome, Firefox, and IE11.
Here's ...
Total width of element (including padding and border) in jQuery
...t the time where not adequate by themselves to calculate the whole width.
Now, as J-P correctly states, jQuery has the functions outerWidth and outerHeight which include the border and padding by default, and also the margin if the first argument of the function is true
[Original answer]
The w...
How do I remove an item from a stl vector with a certain value?
...ontainer_type::erase to do the REAL removal of the extra elements that are now at the end of the container:
std::vector<int> vec;
// .. put in some values ..
int int_to_remove = n;
vec.erase(std::remove(vec.begin(), vec.end(), int_to_remove), vec.end());
...
How do you configure logging in Hibernate 4 to use SLF4J
...fact has a provided scope dependency on the artifact slf4j:slf4j.
As we now have added the org.slf4j:log4j-over-slf4j artifact, org.slf4j:log4j-over-slf4j mimicks the slf4j:slf4j artifact. Therefore everything that JBoss Logging logs will now actually go via slf4j.
Let's say you're using Logba...
How can I see incoming commits in git? [duplicate]
...hand for showing the commits between "the common ancestor of wherever I am now and origin" through "origin".
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