- Quick Coding Cheat Sheet Reference App Mac 2017
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- Quick Coding Cheat Sheet Reference App Mac For Windows 7
It’s easy to use Excel for many of your day-to-day number-crunching tasks, like determining your business’s average sale, computing classroom grades, or forecasting college expenses. Use this handy Cheat Sheet to discover great functions and tips to help you get the most out of Excel.
Excel Functions You’re Likely to Use
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Some Excel functions apply to specific subject areas, but others are general and apply to all needs. The following list shows an array of Excel functions used by one and all. Check here for a quickie reference to the purpose of each Excel function.
| Excel Function | Description |
|---|---|
| SUM | Calculates the sum of a group of values |
| AVERAGE | Calculates the mean of a group of values |
| COUNT | Counts the number of cells in a range that contains numbers |
| INT | Removes the decimal portion of a number, leaving just the integer portion |
| ROUND | Rounds a number to a specified number of decimal places or digit positions |
| IF | Tests for a true or false condition and then returns one value or another |
| NOW | Returns the system date and time |
| TODAY | Returns the system date, without the time |
| SUMIF | Calculates a sum from a group of values, but just of values that are included because a condition is met |
| COUNTIF | Counts the number of cells in a range that match a criteria |
Excel Text Functions You’ll Find Helpful
Excel’s text functions are very helpful when you’re working with names, addresses, customer lists, or any other text-based data. Here is list of Excel functions associated with text, along with a description of what each function does:
| Function | Description |
|---|---|
| LEFT | Extracts one or more characters from the left side of a text string |
| RIGHT | Extracts one or more characters from the right side of a text string |
| MID | Extracts characters from the middle of a text string; you specify which character position to start from and how many characters to include |
| CONCATENATE | Assembles two or more text strings into one |
| REPLACE | Replaces part of a text string with other text |
| LOWER | Converts a text string to all lowercase |
| UPPER | Converts a text string to all uppercase |
| PROPER | Converts a text string to proper case |
| LEN | Returns a text string’s length (number of characters) |
Excel Order of Operations to Keep in Mind
Mathematics dictates a protocol of how formulas are interpreted, and Excel follows that protocol. The following is the order in which mathematical operators and syntax are applied both in Excel and in general mathematics. You can remember this order by memorizing the mnemonic phrase, “Please excuse my dear aunt Sally.”
Parentheses
Exponents
Multiplication and division
Addition and subtraction
Excel Cell References Worth Remembering
In Excel formulas, you can refer to other cells either relatively or absolutely. When you copy and paste a formula in Excel, how you create the references within the formula tells Excel what to change in the formula it pastes. The formula can either change the references relative to the cell where you’re pasting it (relative reference), or it can always refer to a specific cell.
You can also mix relative and absolute references so that, when you move or copy a formula, the row changes but the column does not, or vice versa.
Preceding the row and/or column designators with a dollar sign ($) specifies an absolute reference in Excel.
| Example | Comment |
|---|---|
| =A1 | Complete relative reference |
| =$A1 | The column is absolute; the row is relative |
| =A$1 | The column is relative; the row is absolute |
| =$A$1 | Complete absolute reference |
Excel Error Messages to Get to Know
If you create a formula in Excel that contains an error or circular reference, Excel lets you know about it with an error message. A handful of errors can appear in a cell when a formula or function in Excel cannot be resolved. Knowing their meaning helps correct the problem.
| Error | Meaning |
|---|---|
| #DIV/0! | Trying to divide by 0 |
| #N/A! | A formula or a function inside a formula cannot find the referenced data |
| #NAME? | Text in the formula is not recognized |
| #NULL! | A space was used in formulas that reference multiple ranges; a comma separates range references |
| #NUM! | A formula has invalid numeric data for the type of operation |
| #REF! | A reference is invalid |
| #VALUE! | The wrong type of operand or function argument is used |
This document is a cheat sheet that condenses some UITest information for quick reference, it contains the following topics:
- Writing Tests
- Code Snippets
Writing Tests
This snippet is a boilerplate TestFixture for a test class on a single platform:
For solutions involving both Android and iOS, the following code will help with writing cross platform UITests.
Quick Coding Cheat Sheet Reference App Mac 2017
Xamarin.Forms solutions should follow the instructions described in the guide Automating Xamarin.Forms testing with Xamarin.UITest and Test Cloud.
Initializing Xamarin.UITest on iOS
Add the following snippet to the FinishedLaunching method of the AppDelegate class:
The Xamarin Test Cloud Agent uses non-public Apple APIs, which will cause your app to be rejected by the App Store. The Xamarin.iOS linker will remove the Xamarin Test Cloud Agent from the final IPA if it not explicitly referenced anywhere by the code. Release builds do not have the ENABLE_TEST_CLOUD compiler variable, which will cause the Xamarin Test Cloud Agent to be removed from app bundle. Debug builds will have the compiler directive defined, preventing the linker from removing the Xamarin Test Cloud Agent.
Determine Device ID for iOS Simulator
You can determine the UUID for the iOS simulators on a computer, use the instruments command as shown below:
Starting an iOS Simulator Instance
It is possible to run UITests on a specific iOS version and simulator by using the device ID.
Reset an iOS Simulator to Factory Defaults
This code snippet can be used to stop a given iOS simulator and reset it back to factory defaults:
Code Snippets
This section will provide some code snippets that can be helpful for writing UITests.
Querying Elements Based on Property Value
Enable Screenshots Locally
The above code example puts screenshots in the directory where the test assembly resides, naming the image screenshot-X-png.
Invoke a Method on an AppResult or UI Element
It is possible to execute native methods on underlying views with the AppQuery.Invoke method. The method invoked must match the native method name, not the C# method name. For example, to invoke the setGravity method on an Android TextView:
Notice that the Invoke uses Java TextView.setGravity method and not the C# TextView.[Gravity](https://developer.xamarin.com/api/property/Android.Widget.TextView.Gravity/) property.
Quick Coding Cheat Sheet Reference App Machine
Handling Android permissions
Quick Coding Cheat Sheet Reference App Mac For Windows 7
If you install using .ApkFile(apkpath) instead of PreferIdeSettings() then the app is granted with 'all' permissions, which will remove the permission pop-ups. In the .ApkFile(apkpath) method, apkpath must point to the apps compiled apk file.