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Xcode debugger doesn't print objects and shows nil, when they aren't
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edited Nov 30 '13 at 2:38
Ry-♦
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How to hide the “back” button in UINavigationController?
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314
I just found out the answer, in a controller use this:
[self.navigationItem setHidesBackButto...
Simple explanation of MapReduce?
...hem back in the same kind of list.
suppose I have a list of numbers: [1,2,3] and I want to double every number, in this case, the function to "double every number" is function x = x * 2. And without mappings, I could write a simple loop, say
A = [1, 2, 3]
foreach (item in A) A[item] = A[item] * 2
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Rails and PostgreSQL: Role postgres does not exist
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13 Answers
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How to debug Google Apps Script (aka where does Logger.log log to?)
...klist_num_rows-1; i++) {
var split = checklist_data_range.getCell(i+2, 3).getValue().split(" || ");
var item_id = split[split.length - 1];
if(item_id != "") {
item_id = parseInt(item_id);
Logger.log("setting value at ("+(i+2)+",2) to " + coredata_data_range.getCell(item_id+1,...
App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 · App Inventor 2 中文网
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1、硬件接线（特别注意：VCC 3.3v 或 5v 请参阅说明书，不要弄错以免烧坏硬件）
2、串口工具测试
什么是串口工具？
测试与BLE硬件通信（数据透传）
AT控制指令
IO口控制
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Git in Powershell saying 'Could not find ssh-agent'
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137
For those looking for a detailed explanation have a read of this blog post. Below is a quote fr...
Can't start site in IIS (use by another process)
...ommand to find the task from your command prompt:
tasklist /FI "PID eq 123"
Note: change 123 with the PID returned from the first command.
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htaccess redirect to https://www
...rule will catch it.
RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
# Now, rewrite any request to the wrong domain to use www.
# [NC] is a case-insensitive match
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule .* https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
About proxying
When b...
How to create a release signed apk file using Gradle?
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31 Answers
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