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What is the C runtime library?
What actually is a C runtime library and what is it used for? I was searching, Googling like a devil, but I couldn't find anything better than Microsoft's: "The Microsoft run-time library provides routines for programming for the Microsoft Windows operating system. These routines automate many commo...
How to access custom attributes from event object in React?
...atever
},
Notice the bind(). Because this is all javascript, you can do handy things like that. We no longer need to attach data to DOM nodes in order to keep track of them.
IMO this is much cleaner than relying on DOM events.
Update April 2017: These days I would write onClick={() => this.re...
How do I expire a PHP session after 30 minutes?
I need to keep a session alive for 30 minutes and then destroy it.
15 Answers
15
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Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
...it is a shame google made this kind of change without proper documantation and announcement.
– user65721
Nov 17 '13 at 3:11
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How can I know which parts in the code are never used?
..., it's much more difficult. Statically it requires whole program analysis, and even though link time optimization may actually remove dead code, in practice the program has been so much transformed at the time it is performed that it is near impossible to convey meaningful information to the user.
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Python list of dictionaries search
...icts if item["name"] == "Pam")
{'age': 7, 'name': 'Pam'}
If you need to handle the item not being there, then you can do what user Matt suggested in his comment and provide a default using a slightly different API:
next((item for item in dicts if item["name"] == "Pam"), None)
And to find the in...
What are the differences between delegates and events?
What are the differences between delegates and an events? Don't both hold references to functions that can be executed?
12 ...
App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...合并工具
【项目编译】AI2本地编译.apk工具
【存储】Android存储系统基础知识：内部存储，外部存储，App特定目录ASD 及 getASD代码实现
【视频】App Inventor 2基础组件使用
【科普】App Inventor 2 中的“2”是什么意思？
【科普...
No == operator found while comparing structs in C++
...han: Why would C++ know how you want to compare your structs for equality? And if you want the simple way, there's always memcmp so long your structs don't contain pointer.
– Xeo
Apr 21 '11 at 6:59
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Is there a way to specify how many characters of a string to print out using printf()?
...ogous to the "%8.8s" notation, but again allows you to specify the minimum and maximum lengths at runtime - more realistically in a scenario like:
printf("Data: %*.*s Other info: %d\n", minlen, maxlen, string, info);
The POSIX specification for printf() defines these mechanisms.
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