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How to enable PHP short tags?
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We have a PHP coding test and occasionally receive submissions where the <?= short tag has been used. Unfortunately the assumption that this style is in use everywhere is a little naive and often comes from developers brought up on a diet of ASP. Clearly it is...
how to prevent “directory already exists error” in a makefile when using mkdir
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"Generally, stick to the widely-supported (usually posix-specified) options and features of these programs. For example, don't use ‘mkdir -p’, convenient as it may be, because a few systems don't support it at all and with othe...
What does a just-in-time (JIT) compiler do?
What does a JIT compiler specifically do as opposed to a non-JIT compiler? Can someone give a succinct and easy to understand description?
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Conditionally use 32/64 bit reference when building in Visual Studio
...file(s). You also need separate directories for the different binaries, ideally siblings of each other, and with the same name as the platform you are targeting.
After adding a single platform's references to the project, open the .csproj in a text editor. Before the first <ItemGroup> element...
What does 'foo' really mean?
...ifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?)
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MySQL 'create schema' and 'create database' - Is there any difference
... CREATE SCHEMA is a synonym for CREATE DATABASE as of MySQL 5.0.2.
this all goes back to an ANSI standard for SQL in the mid-80s.
That standard had a "CREATE SCHEMA" command, and it served to introduce
multiple name spaces for table and view names. All tables and views were
created within a "s...
Observer Design Pattern vs “Listeners”
It seems to me that the Observer design pattern as described in GOF is really the same thing as Listeners found in various toolkits. Is there a difference between the concepts, or are Listeners and Observers really the same thing.
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Max length for client ip address [duplicate]
...esses are 128 bits (as opposed to 32 bits of IPv4 addresses). They are usually written as 8 groups of 4 hex digits separated by colons: 2001:0db8:85a3:0000:0000:8a2e:0370:7334. 39 characters is appropriate to store IPv6 addresses in this format.
Edit: However, there is a caveat, see @Deepak's ans...
@import vs #import - iOS 7
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It's a new feature called Modules or "semantic import". There's more info in the WWDC 2013 videos for Session 205 and 404. It's kind of a better implementation of the pre-compiled headers. You can use modules with any of the system frameworks in...
Is It Possible to Sandbox JavaScript Running In the Browser?
...vaScript running in the browser to prevent access to features that are normally available to JavaScript code running in an HTML page.
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