null link

For Java programmers, NULL is a headache. It is often harassed by a null pointer exception (NPE). Even the inventor of Java admits it was a big mistake. Why should Java keep null? Null has been around for some time, and I think the Java inventor

Reproduced:About the static link library (Lib,. A) with dynamic-link libraries (DLLs,. SO) (2011-10-10 21:04:26) reproduced Category: C, VC, CPP Under Windows, you can generally see files with the suffix dll and

Let's talk about the files available after the Link Library Project is generated. The dynamic link library project generates a. dll file and A. Lib file. The static Link Library project has only one. Lib file. Of course, to use a dynamic or static

For details about the/dev/null and/dev/zero files, and solutions for accidental deletion of/dev/null and/dev/zero, and the disk I/O Testing Method Using/dev/zero, disk deletion and recovery by mistake1. Introduction-explanation from

1, Introduction--From the wiki interpretation/dev/null:In a Unix-like system, a/dev/null, or empty device, is a special device file that discards everything written to it (but reports a successful write operation) and reads it immediately to get an

In the production of web pages we often have some text, pictures, etc. to make hyperlinks, but if the production, some linked pages are not ready, then we can use the empty link, remind ourselves where to add links. First select the text that you

NULL pointer Constants An integer constant representing a value of 0, called a null pointer constant. For example: 0, 0L, 1-1 (both are integer constant expressions with a value of 0) and (void*) 0, void* null are NULL pointer constants, NULL

JS magic Hall: in-depth explanation of LINK elements and js magic link I. Preface We generally use to introduce an external stacked Style File, however, we do not know much about the specific meaning of each attribute of the LINK element and the

If you are interested in static and dynamic link libraries in Linux, click --> you knowI. Concept1) The static Link Library is the. lib file you are using. The code in the library needs to be connected to your executable file, so the static

My Android advanced tutorial ------) the intent in the onStartCommand () method of service in android is null Today, when I was maintaining a company APP, a null pointer suddenly went wrong, Caused by: java.lang.NullPointerException: Attempt to