PHP, cURL, and HTTP POST example?

<?php // // A very simple PHP example that sends a HTTP POST to a remote site // $ch = curl_init(); curl_setopt($ch, CURLOPT_URL,””); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, “postvar1=value1&postvar2=value2&postvar3=value3”); // In real life you should use something like: // curl_setopt($ch, CURLOPT_POSTFIELDS, // http_build_query(array(‘postvar1’ => ‘value1’))); // Receive server response … curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); $server_output = … Read more

How to set the text color of TextView in code?

You should use: holder.text.setTextColor(Color.RED); You can use various functions from the Color class to get the same effect of course. Color.parseColor (Manual) (like LEX uses) text.setTextColor(Color.parseColor(“#FFFFFF”)); Color.rgb and Color.argb (Manual rgb) (Manual argb) (like Ganapathy uses) holder.text.setTextColor(Color.rgb(200,0,0)); holder.text.setTextColor(Color.argb(0,200,0,0)); And of course, if you want to define your color in an XML file, you can do … Read more

Is there a quick change tabs function in Visual Studio Code?

By default, Ctrl+Tab in Visual Studio Code cycles through tabs in order of most recently used. This is confusing because it depends on hidden state. Web browsers cycle through tabs in visible order. This is much more intuitive. To achieve this in Visual Studio Code, you have to edit keybindings.json. Use the Command Palette with … Read more

Combination of async function + await + setTimeout

Your sleep function does not work because setTimeout does not (yet?) return a promise that could be awaited. You will need to promisify it manually: function timeout(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } async function sleep(fn, …args) { await timeout(3000); return fn(…args); } Btw, to slow down your loop you probably don’t want … Read more

*ngIf and *ngFor on same element causing error

Angular v2 doesn’t support more than one structural directive on the same element. As a workaround use the <ng-container> element that allows you to use separate elements for each structural directive, but it is not stamped to the DOM. <ng-container *ngIf=”show”> <div *ngFor=”let thing of stuff”> {{log(thing)}} <span>{{}}</span> </div> </ng-container> <ng-template> (<template> before Angular v4) … Read more

How can I detect if this dictionary key exists in C#?

You can use ContainsKey: if (dict.ContainsKey(key)) { … } or TryGetValue: dict.TryGetValue(key, out value); Update: according to a comment the actual class here is not an IDictionary but a PhysicalAddressDictionary, so the methods are Contains and TryGetValue but they work in the same way. Example usage: PhysicalAddressEntry entry; PhysicalAddressKey key = c.PhysicalAddresses[PhysicalAddressKey.Home].Street; if (c.PhysicalAddresses.TryGetValue(key, out … Read more