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Java logical operator short-circuiting

... In fact, to be really complete, all of &&, ||, & and | evaluate left to right. For a set of booleans b1, b2, ..., bn, the short circuit versions will cease evaluation when the first of these booleans is true (||) or false (&&a...
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Android Studio with Google Play Services

... All those answers are wrong, since the release of gradle plugin v0.4.2 the setup of google play services under android studio is straight forward. You don't need to import any jar or add any project library nor add any new mo...
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OS detecting makefile

... still use solely uname, but you have to deal with if/else blocks to check all MinGW, Cygwin, etc. variations. The environment variable OS is always set to "Windows_NT" on different Windows versions (see %OS% environment variable on Wikipedia). An alternative of OS is the environment variable MSVC (...
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What is external linkage and internal linkage?

... a translation unit. This is the source file from your implementation plus all the headers you #included in it. Internal linkage refers to everything only in scope of a translation unit. External linkage refers to things that exist beyond a particular translation unit. In other words, accessible ...
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Execution time of C program

I have a C program that aims to be run in parallel on several processors. I need to be able to record the execution time (which could be anywhere from 1 second to several minutes). I have searched for answers, but they all seem to suggest using the clock() function, which then involves calculating...
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Android: how to handle button click

...ionality (Java Class Files). It also makes for easier debugging. It is actually a lot easier to read this way and think about Android imo. Question 2: I believe the two mainly used are #2 and #3. I will use a Button clickButton as an example. 2 is in the form of an anonymous class. Button clickButto...
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What is boxing and unboxing and what are the trade offs?

... that are minimal wrappers around primitive types*. Boxed values are typically stored as pointers to objects on the heap. Thus, boxed values use more memory and take at minimum two memory lookups to access: once to get the pointer, and another to follow that pointer to the primitive. Obviously th...
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Fancybox doesn't work with jQuery v1.9.0 [ f.browser is undefined / Cannot read property 'msie' ]

... by navigator.userAgent.match(/msie [6]/i) around line 615 (and/or replace all $.browser.msie instances, if any), thanks joofow ... that's it! Or download the already patched version from HERE (UPDATED March 19, 2013 ... thanks fairylee for pointing out the extra closing bracket) NOTE: this is an...
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Make git automatically remove trailing whitespace before committing

... I'm assuming that the easiest way to do this would be for git to automatically remove trailing whitespace (and other whitespace errors) from all commits as they are applied. ...
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How to change XAMPP apache server port?

...a free port number The default port used by Apache is 80. Take a look to all your used ports with Netstat (integrated to XAMPP Control Panel). Then you can see all used ports and here we see that the 80port is already used by System. Choose a free port number (8012, for this exemple). 2. Ed...