why java thread cannot get the newest value
What is the volatile keyword useful for?
Do the beacon lighters really live on top of the mountains? Following this image I found online:    Do the beacon lighters really live on top of the mountains?  It seems really cold on top of some of these mountains and there are no villages or whatsoever. Use of substitution into the integral $\int_0^2 \frac{\arctan x}{x^2+2x+2}dx$ This question: got some attention, but I didn't understand anything of it. Now I looked at the solution of the book and there is given the hint to use the change of variable $$x=\frac{1-t}{1+2t}$$ Could you please explain how one could think of such substitution? Is there some intuition behind this? Also after I used the substitution I got: $$\int_{-1/5}^1\frac{3\arctan\left(\frac{1-t}{1+2t}\right)}{5t^2+8t+5}dt$$ How can I finish this using the hint from the book? How to avoid being prompted for a password by sudo? I know I can become root (super user) via the su command but I have to authorize it after entering the commands. Is there a way I can become root and authorize (with password) in one line If I select a feature and run self.iface.actionIdentify().trigger() it will open the identify window but won't open the selected feature's data, how can I make it open the data of the selected feature? Prove $(1-a)(1-b)(1-c)(1-d)\geq abcd$ if $a^2+b^2+c^2+d^2=1$ Let $a,b,c,d\geq0$, $a^2+b^2+c^2+d^2=1$ Prove $\displaystyle (1-a)(1-b)(1-c)(1-d)\geq abcd$ I mutiplied both with $\displaystyle (1+a)(1+b)(1+c)(1+d)$ to use $1-a^2=b^2+c^2+d^2$ and try using the cauchy-schwarz and holder but it is doesn't work. I am writing a WP plugin. I have created a button for the user to click in thw WP dashboard. I need to run a function when a user clicks the button, shown with a red arrow. The code snippet for the button is:&lt;p&gt;&lt;button class="button button-primary"&gt;Update Media Titles and ALT Text&lt;/button&gt;&lt;/p&gt;. I have already created the function in my class like so:  public function kh_update_media_seo() {      //update media files title and alt tags here }   I can handle the code that goes in the function alone, I only need help making the button in the WP dashboard fire off this specific function when clicked.  Pardon me if this sounds dump or straight forward. It's my first time doing this.  My plugin is a one file plugin if that helps. Sounds of the letter a How can I know, precisely, when to differentiate the sounds of the letter a, like in: apple and vault? We always change subject and verb positions in whenever we want to ask a question such as "What is your name?". But when it comes to statements like the following, which form is correct?        I don't understand what are you talking about.   I don't understand what you are talking about.      Another example        Do you know what time is it?   Do you know what time it is?      Another example        Do you care how do I feel about this?   Do you care how I feel about this? Difference between ref and out parameters in .NET Split a commit into smaller commits with Git? New install - no network devices available - Realtek Device b822 I just purchased a Lenovo Yoga 730 15" laptop, and installed Ubuntu 16.04 in place of Windows 10. Install seemingly worked fine, but now I have no wifi device available.  Tried a reinstall just to be sure, and the same issue is happening. I don't believe it to be a hardware issue, as wifi was working without issue on Windows before I wiped it out.  When I run rfkill list I see:  0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no   But when I run lspci I only see one item in the list claiming to be a network device:  3a:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b822 (rev ff)   I have a USB wifi adapter and that gets me connected without issue, but obviously that is not the desired solution.  Does anyone have any insight on what might be causing the issue?  Output from modinfo -p rtl8822be:  fix_rate: (int) debug_level: (int) swenc:Set to 1 for software crypto (default 0) (bool) ips:Set to 0 to not use link power save (default 1) (bool) swlps:Set to 1 to use SW control power save (default 0) (bool) fwlps:Set to 1 to use FW control power save (default 1) (bool) msi:Set to 1 to use MSI interrupts mode (default 1) (bool) dma64:Set to 1 to use DMA 64 (default 0) (bool) aspm:Set to 1 to enable ASPM (default 1) (int) debug:Set debug level (0-5) (default 0) debug_mask:Set debug mask (default 0) (ullong) disable_watchdog:Set to 1 to disable the watchdog (default 0) (bool) Catenatives followed by infinitives and gerunds What is the difference in meaning when the catenative verb “like” is followed by an infinitive, or by a gerund? For example:      Do you like ski jumping?    vs.      Do you like to ski jump?   Also, what is the difference between:      My brother taught me to read and write.    vs.       My brother taught me reading and writing. I have some HTML I am trying to parse.  There are cases where the html attributes alone are not going to help me identify the row type (header versus data).  Fortunately, if my row is a data row then it should have some values that can be converted to integers.  I have figured out how to convert the unicode to an integer for those cases that it is possible to make the conversion.  I am struggling to write the logic to move past the cells that the conversion will not work because the cell has content that must be treated as text.  for example if rowColumn[1][3] can be converted to an integer I can do so by   int(rowColumn[1][3].replace(',','').strip('$'))   but I get an error if rowColumn[1][3] has text content. How to create two classes in C++ which use each other as data? Automotive electronic circuit design, Voltage divider to uC ADC pin Automotive Circuit requirement:   If input pin is connected to Battery(T87 line), the output of the circuit shall provide a output voltage of 5V to ADC pin of microcontroller, if the input pin is connected to GND, the output of the circuit shall provide a output voltage of 0V to ADC pin of microcontroller and if the input pin is left floating, the output of the circuit shall provide a output voltage of 2.5V to ADC pin of microcontroller.   The battery voltage in load dump condition could be up to 60V, but in normal operation without any fault condition, it would be up to 32V.  Would a simple voltage divider (with a pull-up to 5V) with a blocking diode be enough? Any other ideas? What parameters of the ADC of the microcontroller should be considered? Injection current into the uC- ADC pin would be critical, right? How do I find out the voltage thresholds? Also, what are the parameters of the Schottky diode that I should look to select? The diode would decouple the input pin from the centre tap of the voltage divider, because in case the input pin is connected to battery, the injection current into the uC ADC pin would be too high.  I have used a switching diode, since it was already available in the Bill of Materials. I am completely new to riding bikes and know that are usually filled with air but nowadays some people fill them with Nitrogen instead.  I don't know why they prefer to fill their tires with nitrogen as it is more costly than filling them with air.  What are the benefits of filling tires with Nitrogen? Best Azure Service for Large no of SQLServer Databases Is full wave rectifier better than half wave one? The real meaning of time dilation When I search for my address on Google Maps it cannot be found which means I can't order takeaway etc.  Is there a way of adding my address to Google Maps or even add a street address?  I want the address to be publicly available so others can search it.