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cscope or ctags why choose one over the other? [closed]
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ctags enables two features: allowing you to jump from function calls to their definitions, and omni completion. The first means that when you are over a call to a method, hitting g] or CTRL-] will jump to the place where that method is defined or implemented. The second fea...
How to check for a valid Base64 encoded string
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Use Convert.TryFromBase64String from C# 7.2
public static bool IsBase64String(string base64)
{
Span<byte> buffer = new Span<byte>(new byte[base64.Length]);
return Convert.TryFromBase64String(base64, buffer , out int bytes...
Warning: “format not a string literal and no format arguments”
...ay the C language works, it's going to pick up some random garbage pointer from the stack and try to treat it like an NSString. This will most likely crash your program. Now your strings probably don't have %@'s in them, but some day they might. You should always use a format string with data you ex...
HTML colspan in CSS
...e didn't fullfil our design requirement.
But if you don't need to benefit from the table-layout behaviour, then durilai's answer would suit you enough.
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How do you explicitly set a new property on `window` in TypeScript?
... to use it but don't want to, make the case to your manager to switch away from TS, or get help getting the typings right. It's exceedingly unprofessional and petulant to muddy and disrupt a TS codebase as a passive aggressive swipe at strong/static typing.
– Patrick
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How to cancel/abort jQuery AJAX request?
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You can use jquery-validate.js . The following is the code snippet from jquery-validate.js.
// ajax mode: abort
// usage: $.ajax({ mode: "abort"[, port: "uniqueport"]});
// if mode:"abort" is used, the previous request on that port (port can be undefined) is aborted via XMLHttpRequest.abort...
Performance of FOR vs FOREACH in PHP
...luate at parse time whether anything modifies the array. This prevents it from evaluating the count once.
But even once you fix it with "$c=count($x); for ($i=0; $i<$c; $i++) the $i<$c is a bunch of Zend opcodes at best, as is the $i++. In the course of 100000 iterations, this can matter. F...
How does Rails keep track of which migrations have run for a database?
.... If you roll back that migration, Rails will delete the corresponding row from schema_migrations.
For example, running a migration file named 20120620193144_create_users.rb will insert a new row with a version of 20120620193144 into the schema_migrations table.
You are free at any point to introd...
Is there an easy way to request a URL in python and NOT follow redirects?
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Everybody who comes here from google, please note that the up to date way to go is this one: stackoverflow.com/a/14678220/362951 The requests library will save you a lot of headache.
– mit
May 5 '14 at 2:36
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Popup弹出菜单扩展 · App Inventor 2 中文网
...这一点。
从字符串设置菜单项
MenuItemsFromString属性在设计器和运行时都可用。单个项目定义用逗号分隔列出：
从列表设置菜单项
SetMenuItems方法允许将菜单项定义为列表：
从文件...