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Building vs. Compiling (Java)

... The "Build" is a process that covers all the steps required to create a "deliverable" of your software. In the Java world, this typically includes: Generating sources (sometimes). Compiling sources. Compiling test sources. Executing tests (unit tests, integrat...
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@property retain, assign, copy, nonatomic in Objective-C

...gners opted for the safer of the two solutions. In fact nonatomic is generally the better choice as it omits extremely expensive thread locks. The only reason to use atomic is if your property might be set from multiple threads (in which case omitting it can lead to an over-release or a leak). ...
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What is the difference between persist() and merge() in JPA and Hibernate?

...these other entities are annotated with the cascade=PERSIST or cascade=ALL annotation element value or specified with the equivalent XML descriptor element. If X is a removed entity, it becomes managed. If X is a detached object, the EntityExistsException may be thrown when the...
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HTML/CSS: Making two floating divs the same height

... peculiar problem that I currently solve using a table , see below. Basically, I want to have two divs take up 100% of the available width, but only take up as much vertical space as needed (which isn't really that obvious from the picture). The two should at all times have the exact same height ...
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How do I remove objects from a JavaScript associative array?

...rray, if you do not want to create a sparsely populated array - and you usually don't - then you should use Array#splice or Array#pop. Note that the delete operator in JavaScript does not directly free memory. Its purpose is to remove properties from objects. Of course, if a property being deleted ...
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Convert data.frame column format from character to factor

...e to the world of R. mtcars #look at this built in data set str(mtcars) #allows you to see the classes of the variables (all numeric) #one approach it to index with the $ sign and the as.factor function mtcars$am <- as.factor(mtcars$am) #another approach mtcars[, 'cyl'] <- as.factor(mtcars[...
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Find the version of an installed npm package

How to find the version of an installed node.js/npm package ? 27 Answers 27 ...
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How to make code wait while calling asynchronous calls like Ajax [duplicate]

... Use callbacks. Something like this should work based on your sample code. function someFunc() { callAjaxfunc(function() { console.log('Pass2'); }); } function callAjaxfunc(callback) { //All ajax calls called here o...
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How to frame two for loops in list comprehension python

...ehension. (Perfectly matches the 79 character limit too (without the list call)) share | improve this answer | follow | ...
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git replacing LF with CRLF

...ons transparently. And it does! Bad news: value needs to be configured manually. Good news: it should only be done ONE time per git installation (per project setting is also possible). How autocrlf works: core.autocrlf=true: core.autocrlf=input: core.autocrlf=false: ...