Newbe Dev Stack

Example 1: css change image width /*Search Term: "CSS change image width"*/ img { width : /*Add width here*/ ; } /*Example*/ img { width : 200 px ; } Example 2: CSS change image height /*Search Term: "CSS change image height"*/ img { height : /*Add height here*/ ; } /*Example*/ img { height : 200 px ; }

Example: inch to cm 1 inch = 2.54 cm

Example 1: set background image opacity #bg { background-image : url ( 'images/wood1.jpg' ) ; opacity : 0.2 ; width : 300 px ; height : 300 px ; } Example 2: css opacity example .opacity30 { opacity : 0.3 ; filter : alpha ( opacity= 30 ) ; /* For IE8 and earlier */ } Example 3: background image opacity css body ::before { content : "" ; position : absolute ; top : 0 ; right : 0 ; bottom : 0 ; left : 0 ; z-index : -1 ; background-image : url ( image.jpg ) ; /*Put your image url*/ background-size : cover ; background-position : center ; opacity : 0.25 ; /*Value from 0.0 to 1.0*/ } Example 4: background image opacity css /* Two ways to make images opaque */ div { background-color : rgba ( 120 , 120 , 120 , 0.5 ) /* the 0.5 is the value of opacity on a scale of 0-1 */ } /* OR */ div { background-color : blue opacity : 50 % } Example 5: css ...

Answer : The documentation of integral_points cites the algorithm found in Henri Cohen, Number Theory, Vol. I: Tools and Diophantine Equations. GTM 239, Springer, 2007. You can read the implementation e.g. by entering E.integral_points?? into a SageMath session. The algorithm finds all the integral points, but it depends crucially on having computed the Mordell-Weil group. On this topic, the documentation reads: mw_base - list of EllipticCurvePoint generating the Mordell-Weil group of E (default: ‘auto’ - calls self.gens() ) Note: The complexity increases exponentially in the rank of curve E. The computation time (but not the output!) depends on the Mordell-Weil basis. If mw_base is given but is not a basis for the Mordell-Weil group (modulo torsion), integral points which are not in the subgroup generated by the given points will almost certainly not be listed. In turn, the documentation of gens() , about its optional argument proof , says: p...

Answer : you can check easily for that. this will describe all the package installed globally npm list -g --depth=0 this will describe all the package installed locally on your project. npm list --depth=0 if you want to check for a particular module is installed or not. Please use the following command in project folder. if installed, will display package name and version installed. if not installed, then will not display anything. npm list --depth=0 | grep <module_name> for more detail information please see this link. Click here for more info of your question --depth=0 is necessary so that your terminal isn't flooded with package dependencies. if you are not use this option, you will see the all the dependencies tree. If you are searching for specific package installed in your project, you can use one of the commands below based on what kind of terminal you use. If you are using Unix shell based terminal, you can use: npm list --depth=0 | grep <module...

Answer : It must be: if [ $x -eq 3 ]; then ..... if you prefer a more readable and self-explanatory code, use this syntax: if test $x -eq 3; then ..... explanation : To compare integers you must use those operators (copied from man test): INTEGER1 -eq INTEGER2 INTEGER1 is equal to INTEGER2 INTEGER1 -ge INTEGER2 INTEGER1 is greater than or equal to INTEGER2 INTEGER1 -gt INTEGER2 INTEGER1 is greater than INTEGER2 INTEGER1 -le INTEGER2 INTEGER1 is less than or equal to INTEGER2 INTEGER1 -lt INTEGER2 INTEGER1 is less than INTEGER2 INTEGER1 -ne INTEGER2 INTEGER1 is not equal to INTEGER2 operators == and != are for string comparison only. for information: "[" command is an alias for system "test" command. Shell scripting wasn't really meant to be a full language, and it is heavily dependent upon other external commands to work. Variables use a sigil which is tha...

Example: how to add code in google docs How to use Code Blocks Using Code Blocks is equally simple. Open Google Docs and create a new document. With the document open, click Add-ons and select Code Blocks from the menu. A new right sidebar will open (Figure A), where you can make use of the tool.

Answer : That's because telnet is not provided with git. In windows, you need to go to control panel, programs, turn windows features on/off and enable the telnet client. To add on to @lostbard's answer and @signonsridhar's comment, telnet utility need to be invoked with winpty to work on git bash. Example: MINGW64 ~ $ which telnet /c/WINDOWS/system32/telnet MINGW64 ~ $ winpty telnet localhost 2181 Zookeeper version: 3.4.14-4c25d480e66aadd371de8bd2fd8da255ac140bcf, built on 03/06/2019 16:18 GMT

Answer : Well ref constructs an object of the appropriate reference_wrapper type to hold a reference to an object. Which means when you apply: auto r = ref(x); This returns a reference_wrapper and not a direct reference to x (ie T& ). This reference_wrapper (ie r ) instead holds T& . A reference_wrapper is very useful when you want to emulate a reference of an object which can be copied (it is both copy-constructible and copy-assignable ). In C++, once you create a reference (say y ) to an object (say x ), then y and x share the same base address . Furthermore, y cannot refer to any other object. Also you cannot create an array of references ie code like this will throw an error: #include <iostream> using namespace std; int main() { int x=5, y=7, z=8; int& arr[] {x,y,z}; // error: declaration of 'arr' as array of references return 0; } However this is legal: #include <iostream> #include <functional> // ...

Example: c compiler online i reccomend online gdb https : //www.onlinegdb.com/online_c_compiler

Answer : Change that first option "HealthyInstanceCount" to UnHealthyInstanceCount and if there's 1 or more unhealthy, add +1 instance. If UnHealthyInstanceCount is 0, add -1 instance (take one away). Make sure your minimum is set to 1 or more (it is recommended 2 minimum, in two separate availability zones for High Availability). Following up on this as I just had the same problem. The solution proposed by @Max is on the right track, but a slight tweak on the numbers is needed. 1) Ensure minimum instance count and maximum instance count are set as precautions 2) Set the following parameters Trigger Measurement: UnHealthyHostCount Trigger statistic: Maximum Unit of measurement: Count Upper threshold: 0 Upper breach scale increment: 1 Lower threshold: 1 Lower breach scale increment: -1

Answer : Okay I've found an update here. Found that AVCaptureMetadataOutputObjectsDelegate method is changed from captureOutput(_ captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection: AVCaptureConnection!) to metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) After changing this delegate method, its working good now.

Answer : AVL trees are intended for in-memory use, where random access is relatively cheap. B-trees are better suited for disk-backed storage, because they group a larger number of keys into each node to minimize the number of seeks required by a read or write operation. (This is why B-trees are often used in file systems and databases, such as SQLite.) Both the AVL tree and the B-tree are similar in that they are data structures that, through their requirements, cause the height of their respective trees to be minimized. This "shortness" allows searching to be performed in O(log n) time, because the largest possible number of reads corresponds to the height of the tree. 5 / \ 3 7 / / \ 1 6 9 This is an AVL tree, and is a binary search tree at its core. However, it is self-balancing, which means that as you add elements to the tree, it will restructure itself to maintain as uniform of a height as it can. Basically, it will not allow long branches. ...

Answer : Try this code snippet. rotate.xml <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <rotate android:fromDegrees="0" android:toDegrees="360" android:pivotX="50%" android:pivotY="50%" android:repeatCount="0" android:duration="1000" /> </set> in java file ImageButton imgbt = (ImageButton)findViewById(R.id.your_id); Animation ranim = (Animation)AnimationUtils.loadAnimation(context, R.anim.rotate); imgbt.setAnimation(ranim); rotate.xml <?xml version="1.0" encoding="utf-8"?> <rotate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" android:fromDegrees="0" android:interpolator="@android:anim/linear_interpolator" android:pivotX="50%" android:pivotY=...

Answer : Let’s be utilitaristic and do a rough, optimistic calculation : First, how much time does correcting a spelling mistake cost? First of all, it costs you some time to find a way to contact somebody from the journal. I ran an experiment with a random journal and it took me three minutes to find a way to contact the chief editor and to ensure that there is no easy way to contact somebody closer to actual typesetting. It costs you about one minute to write the mail. It costs the chief editor (in our example) at least one minute to read the mail and redirect it to typesetting. It costs the head of typesetting at least one minute to delegate the work. Whoever is actually doing the work, has to find the source of the paper, correct the mistake, check whether the whole paper is still neatly arranged (even if the correction did not alter the number of lines in the paragraph, the linebreaking algorithm or the font might have slightly changed) and every sentence is still on t...

Answer : There is an implementation in my TypeScript utilities based on JavaScript GUID generators. Here is the code: class Guid { static newGuid() { return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) { var r = Math.random() * 16 | 0, v = c == 'x' ? r : (r & 0x3 | 0x8); return v.toString(16); }); } } // Example of a bunch of GUIDs for (var i = 0; i < 100; i++) { var id = Guid.newGuid(); console.log(id); } Please note the following: C# GUIDs are guaranteed to be unique. This solution is very likely to be unique. There is a huge gap between "very likely" and "guaranteed" and you don't want to fall through this gap. JavaScript-generated GUIDs are great to use as a temporary key that you use while waiting for a server to respond, but I wouldn't necessarily trust them as the primary key in a database. If you are going to rely on a JavaScript-generated GUID, I wo...

Example 1: c++ # include <bits/stdc++.h> using namespace std ; int main ( ) { return 0 ; } Example 2: c++ Very imp for placements

Answer : The following eight pseudo-elements are made available by WebKit for customizing a date input’s textbox: ::-webkit-datetime-edit ::-webkit-datetime-edit-fields-wrapper ::-webkit-datetime-edit-text ::-webkit-datetime-edit-month-field ::-webkit-datetime-edit-day-field ::-webkit-datetime-edit-year-field ::-webkit-inner-spin-button ::-webkit-calendar-picker-indicator So if you thought the date input could use more spacing and a ridiculous color scheme you could add the following: ::-webkit-datetime-edit { padding: 1em; } ::-webkit-datetime-edit-fields-wrapper { background: silver; } ::-webkit-datetime-edit-text { color: red; padding: 0 0.3em; } ::-webkit-datetime-edit-month-field { color: blue; } ::-webkit-datetime-edit-day-field { color: green; } ::-webkit-datetime-edit-year-field { color: purple; } ::-webkit-inner-spin-button { display: none; } ::-webkit-calendar-picker-indicator { background: orange; } <input type="date"> Currently, there is no...

Example: virtual memory in os Virtual Memory is a storage mechanism which offers user an illusion of having a very big main memory . It is done by treating a part of secondary memory as the main memory . Therefore , instead of loading one long process in the main memory , the OS loads the various parts of more than one process in the main memory .