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ComponentGroup 组件组扩展：监控内容变化和批量启用禁用组件 · App Inventor 2 中文网
...AddNamedComponent 为组件指定有意义的名称。
ContentTouched vs ContentChanged：
ContentTouched：一旦内容被修改就变为 true，不会自动变回 false
ContentChanged：如果用户恢复原始值，会变回 false
禁用组件：使用 EnableGroup ...
Best way to pretty print a hash
...
This also doesn't deal with null (JSON) vs nil (Ruby).
– Rennex
Jun 2 '17 at 1:11
1
...
Detect when a window is resized using JavaScript ?
...between a mouse-up and a pause in a cross-browser way, the same for an end vs a pause). You can create that event though, to make it a bit cleaner, like this:
$(window).resize(function() {
if(this.resizeTO) clearTimeout(this.resizeTO);
this.resizeTO = setTimeout(function() {
$(this...
Prevent linebreak after
...gless container. The only difference is their default display mode (block vs inline)
– Joeri Hendrickx
Aug 27 '10 at 11:12
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How do I use vimdiff to resolve a git merge conflict?
...n see here the two diffs dumped into the terminal:
RealView_BASE_15560.py vs RealView_LOCAL_15560.py
RealView_BASE_15560.py vs RealView_REMOTE_15560.py
If the diffs are big, I'll just search up with my tmux superpowers.
TODO: to achieve Nirvana the last thing left would be a way to show only diffs...
Ruby: What is the easiest way to remove the first element from an array?
...use it's a one line expression that you can use anywhere. To avoid the [] vs nil problem, you can do arry[1..-1] || []. But arry.drop(1) is even better.
– fearless_fool
Oct 21 '13 at 0:23
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Converting Integer to Long
...ng.valueof should be used: stackoverflow.com/questions/2974561/new-integer-vs-valueof
– luckyluke
Aug 23 '16 at 8:59
T...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
...ut a short test shows something quite interesting on my ancient e8400 with VS2010 x64 release, testcode for MATSIZE 8192
int main() {
LARGE_INTEGER start, end, freq;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&start);
recursiveTranspose(0, MATSIZE, 0, MATSIZE)...
Library? Static? Dynamic? Or Framework? Project inside another project
...unch time since all dynamic libraries should be copied and linked.
[Static vs dynamic linking]
Text-based stub library - .tbd[About], it is a text stub of dynamic library which is located on a target device. As a result you should not package a dynamic library into your bundle. It has a size effect....
Command to collapse all sections of code?
...
CTRL + M + O will collapse all.
CTRL + M + L will expand all. (in VS 2013 - Toggle All outlining)
CTRL + M + P will expand all and disable outlining.
CTRL + M + M will collapse/expand the current section.
CTRL + M + A will collapse all even in Html files.
These options are also in the c...