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C++11 char *str = "hello world"; str[0] = 'H'; "hello world" is a string literal, so modifying it gives undefined behaviour. The initialisation of str in the above example was formally deprecated (scheduled for removal from a future version of the standard) in C++03. A num...
pd.read_excel('path_to_file.xls', sheetname='Sheet1') There are many parsing options for read_excel (similar to the options in read_csv. pd.read_excel('path_to_file.xls', sheetname='Sheet1', header=[0, 1, 2], skiprows=3, index_col=0) # etc.
package { import flash.display.Sprite; import flash.events.Event; public class Viewport extends Sprite { /** Constructor */ public function Viewport() { super(); // Listen for added to stage event addEventListener(Event.ADDED_TO_STAGE, addedToStageHandle...
Output some information about a known remote: origin git remote show origin Print just the remote's URL: git config --get remote.origin.url With 2.7+, it is also possible to do, which is arguably better than the above one that uses the config command. git remote get-url origin
chrome.runtime.getManifest() returns the extension's manifest in a form of a parsed object. This method works both on content scripts and all extension pages, it requires no permissions, Example, obtaining the extension's version string: var version = chrome.runtime.getManifest().version;
/** * @param year Full year as int (ex: 2000). * @param month Month as int, zero-based (ex: 0=January, 11=December). */ function daysInMonth(year:int, month:int):int { return (new Date(year, ++month, 0)).date; }
function isLeapYear(year:int):Boolean { return daysInMonth(year, 1) == 29; }
yii migrate/mark 150101_185401 # using timestamp to specify the migration yii migrate/mark "2015-01-01 18:54:01" # using a string that can be parsed by strtotime() yii migrate/mark m150101_185401_create_news_table # using full name yii migrate/mark 13...
First, download the compiler and components. Next, add Swift to your path. On macOS, the default location for the downloadable toolchain is /Library/Developer/Toolchains. Run the following command in Terminal: export PATH=/Library/Developer/Toolchains/swift-latest.xctoolchain/usr/bin:"${PATH}...
Imagine you have the following HTML: <div> <label>Name:</label> John Smith </div> And you need to locate the text "John Smith" after the label element. In this case, you can locate the label element by text and then use .next_sibling property: from ...
BeautifulSoup has a limited support for CSS selectors, but covers most commonly used ones. Use select() method to find multiple elements and select_one() to find a single element. Basic example: from bs4 import BeautifulSoup data = """ <ul> <li class="item&quo...
When running from the CLI, PHP exhibits some different behaviours than when run from a web server. These differences should be kept in mind, especially in the case where the same script might be run from both environments. No directory change When running a script from a web server, the current w...
void doSomething(String... strings) { for (String s : strings) { System.out.println(s); } } The three periods after the final parameter's type indicate that the final argument may be passed as an array or as a sequence of arguments. Varargs can be used only in the final argume...
Access ModifierVisibilityInheritancePrivateClass onlyCan't be inheritedNo modifier / PackageIn packageAvailable if subclass in packageProtectedIn packageAvailable in subclassPublicEverywhereAvailable in subclass There was once a private protected (both keywords at once) modifier that could be appli...
Here is how to make a Heads Up Notification for capable devices, and use a Ticker for older devices. // Tapping the Notification will open up MainActivity Intent i = new Intent(this, MainActivity.class); // an action to use later // defined as an app constant: // public static final String ME...
Consider the character class [aeiou]. This character class can be used in a regular expression to match a set of similarly spelled words. b[aeiou]t matches: bat bet bit bot but It does not match: bout btt bt Character classes on their own match one and only one character at a time...
beacon = CLBeaconRegion(proximityUUID: <#NSUUID#>, major: <#CLBeaconMajorValue#>, identifier: <#String#>) // listening to all beacons with given UUID and major value beacon = CLBeaconRegion(proximityUUID: <##NSUUID#>, major: <##CLBeaconMajorValue#>, minor: <##C...
In case your project needs to be based on a specific Symfony version, use the optional second argument of the new command: # use the most recent version in any Symfony branch $ symfony new my_project_name 2.8 $ symfony new my_project_name 3.1 # use a specific Symfony version $ symfony new my_...
using System.Net; ... string serverResponse; try { // Call a method that performs an HTTP request (per the above examples). serverResponse = PerformHttpRequest(); } catch (WebException ex) { if (ex.Status == WebExceptionStatus.ProtocolError) { HttpWebResponse...

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