为什么要使用GLib函数?

问题描述

在C和GTK +中进行编程时，为什么更好地使用g_strdup_printf，g_free，g_strcmp0等...和其他GLib函数呢?

While programming in C and GTK+, why is it "better" to use g_strdup_printf, g_free, g_strcmp0 etc... and fellow GLib functions?

推荐答案

通常，GLib的用途是实用程序和可移植性库.这些本身就是考虑使用它的原因.

In general, GLib's purpose is a utility and portability library. Those in itself are reasons to consider using it.

您提到的所有特定功能都在其C标准库变体的基础上提供了一些额外的功能:

The specific functions you mention all offer something extra on top of their C standard library variants:

• g_strdup_printf类似于sprintf，但是实际上为您分配了缓冲区，并避免了您猜测缓冲区应该有多大的猜测. (返回值应为g_free d.)
• g_free与free类似，但是会检查NULL指针.
• g_strcmp0类似于strcmp，但是将NULL指针视为空字符串，因此将其放在前面.

• g_strdup_printf is like sprintf, but actually allocates the buffer for you and saves you the guesswork of how large the buffer should be. (The return value should be g_free'd.)
• g_free is like free, but checks for a NULL-pointer.
• g_strcmp0 is like strcmp, but treats a NULL-pointer like an empty string, and thus sorts it in front.

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