Q: It is common to use null as a default in lieu of any assigned value.   string() means the value is null until it is actually used. Returning a null value can be used to trigger the end of a loop or break a process. This is more commonly used to throw an error or exception when something has gone wrong or an undesired condition has been hit. Similarly, null can be used as flag to show that a process has not yet started or as a condition to mark to be beginning of a process. For example: do something while object is null or do nothing until an object is NOT null.   synchronized method() {      while (method()==null);     method().nowCanDoStuff(); }
A: Use null as an unknown value. Use null as a condition for ending a process. Use null to indicate an uninitiated state.

Article: To install a new icon, you’ll first have to download an icon file (.ico) from the internet. This will bring up a list of sites with alternative Chrome icons. Design Shack and Icon Archive are both excellent options for free, easily-downloadable icons. You shouldn’t have to pay or give out any personal information for these icons. Keep in mind that you can do this as many times as you like, so feel free to experiment with multiple different icons. This will take you to the icon’s download preferences. Some sites allow you to pick the size of the icon or implement different color schemes. Most sites have the option to download as a PNG file or a JPEG file as well, but the ICO file is the only file your computer will recognize as an icon.  For example, you might store it in your “Pictures” folder or the same folder where Google Chrome is installed. If you place your icon somewhere obtrusive and accidentally delete it later, your Chrome icon will change back to the original icon. You can do this by selecting the icon image, holding down ⌘ Command, and tapping C. For a Mac, open the Finder. Chrome should come up in the search window. On PC, it will be listed as a “Desktop App”. This will take you to Google Chrome’s directory—for example, your “Documents” folder. On Mac, click “Get Info”. This will open the Properties menu. On a Mac, click the picture at the top of “Get Info”, then paste the icon with ⌘ Command + V. Your icon should now be changed! This will allow you to choose from a couple of the default icons included in Chrome’s installation. This will allow you to select an icon file from your computer. This should be wherever you saved it. This will save your changes. You now have a new icon! If your Chrome icon was pinned to your taskbar or Start menu beforehand, you’ll need to unpin it, and then repin using the original file found in Chrome’s directory before the icon swap will show.
Question: What is a summary of what this article is about?
Open a browser of your choosing. Type “Google Chrome alternative icon” into your browser. Open an icon site and browse its selection. Click on an icon you would like to download. Customize your preferences. Select “ICO” before downloading your icon. Download your icon. Place your icon in a file where it won’t be disturbed. If you’re on a Mac, copy your icon. Open the Start menu. Type “Google Chrome” into the search bar. Right-click Google Chrome and select “Open file location”. Right-click the Google Chrome icon, then click “Properties”. Select “Change Icon” at the bottom of the Properties menu. Click “Browse”. Select the icon file you downloaded earlier. Click “Apply”, then “OK”.

Problem: Article: Do not put the potted seeds on a windowsill or near a heater, as this will make the air too dry and hot. A closet or a basement are two good indoor spots for the plants to grow. Maintain a growing temperature of 75 to 85 °F (24 to 29 °C) for the plants so they thrive. Use a spray bottle to keep the seeds moist. Make sure it is moist to the touch, but not soaking or dripping wet. Avoid pooling the soil with water, as this can lead to growth issues due to overwatering. Stick to a regular watering schedule so the plants get enough moisture. You can plan to spray the plants in the morning and then again at night so they get the water they need. Your cannabis seeds need light 24 hours a day, seven days a week to grow. Use cool white grow lights that have a consistent temperature of 72 °F (22 °C). Keep the lights 2 inches (5.1 cm) from the pots. Use 3 to 5 watts of light for each pot.  Grow lights range from $200 to $1,200 USD depending on the size and model. You can get cool white grow lights at your local hardware store or online. Touching or handling the seeds can damage them and stunt their growth. With the right growing conditions and care, your seeds should sprout and poke out of the soil within five to ten days.
Summary: Keep the seeds out of direct sunlight in a moist area. Wet the soil one to two times a day. Use cool white grow lights. Avoid touching or handling the seeds as they grow.

Q: Fill a rimmed baking sheet with more sweet rice flour. Roll the marshmallow cubes in the flour until they are coated; this will keep them from getting sticky. Dust off the excess flour, then store them in a sealed container in the fridge. They will last up to 1 week. You can use cornstarch and/or powdered sugar for this step.
A:
Dust the marshmallows with more rice flour before serving them.