Tag：Floating point number
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Pay attention to encoding in string conversion
Just as the precision of floating-point conversion will be lost, the conversion of bytes and strings will also have a smart ending. Although it looks the same, it may not be the person you like @@@code var bs = new byte[16] { 120, 104, 0, 0, 0, 0, 0, 0, 32, 65, 57, 16, 132, […]
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Please collect! Summary of 40 commands necessary for Linux operation and maintenance
1. Delete 0 byte file find -type f -size 0 -exec rm -rf {} ; 2. View process Sort by memory from large to small PS -e -o “%C : %p : %z : %a”|sort -k5 -nr 3. Ranked by CPU utilization from large to small ps -e -o “%C : %p : %z : %a”|sort -nr 4. Print the URL in the cache grep -r -a jpg /data/cache/* | strings | grep “http:” | awk -F’http:’ ‘{print “http:”$2;}’ 5. View the number of concurrent HTTP requests and their TCP connection status: netstat -n | awk ‘/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}’ 6. Sed in this article, the […]
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A number plus 100 is a complete square number, and then 168 is a complete square number
1. Description Violence laws are known, but if the start is not done well, the number – 99 will be ignored A better solution requires good ideas package main import ( “fmt” “math” ) func main() { /** *Conventional solution, violence to find the appropriate number *Because a > = 0 and b > = […]
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On the operation of converting string to floating point number in JSON in golang
Sometimes there is a need to form a JSON data, such as: {“x”:”golang”, “y”:”520.1314″} Y in is deserialized as a floating-point type. If it is written as follows: package main import ( “encoding/json” “fmt” ) type JsonTest struct { X string `json:”x”` Y float64 `json:”y”` } func main() { s := `{“x”:”golang”, “y”:”520.1314″}` var jt […]
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2104 training camp day01
computer What is a computer, PC?Computer, commonly known as computer, is a modern electronic computing machine for high-speed computing. It can carry out numerical calculation, logical calculation and storage and memory function. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed.Computer […]
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Love! Java knowledge points are the strongest summary. The beautiful schoolgirl takes you into the pit, and netizens sigh: it’s really fragrant
Today’s sharing begins. Please give us more advice~ Java is a popular programming language, founded in 1995; There are more than 3 billion devices running Java. Java can run on different platforms (windows, MAC, Linux, raspberry PI, etc.). It is one of the most popular programming languages in the world; Learn the basics of Java, […]
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[share] IOS development – random number generation method in IOS
Generate random positive integers between 0-x int value =arc4random_uniform(x ＋ 1); Generate random positive integers int value = arc4random() The code for obtaining an integer between 0 and X-1 through arc4random() is as follows: int value = arc4random() % x; The code for obtaining an integer between 1 and X is as follows: int value […]
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Problems encountered in debugging CNN model during text classification
Problems encountered in debugging CNN model during text classification 1. Check tensorflow and keras versions import tensorflow as tf tf.__version__ # ‘2.6.0’ import keras keras.__version__ ‘2.6.0’ 2. Import to_ Error in category() About how to import to correctly_ For the content of category, please refer to the link:https://qa.1r1g.com/sf/ask/2904623781/ from tensorflow.keras.utils import to_categorical ”’ Convert the […]
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JavaScript 01
The paper has come to an end, and there are very few changes left, which can be solved in one day. So I have time to write here. The front-end three piece set of HTML, CSS (separated from XSS, not the same thing) and JavaScript have been learned before. This time, I will go through […]
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Learn regular expressions in ten minutes
qualifier 1、?: The character before it needs to appear 0 or 1 times For example: used? You can match use and used 2. *: it will match 0 or more characters For example, AB * C can be matched to AC, ABC, abbbbbc 3. +: it matches one or more characters For example, AB + […]
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Form regular
Preface: onkeyup, onchange, oninput differences a、onkeyup = “value=value.replace(/[^\d]/g,”)” Using the onkeyup event, there is a bug, that is, in the Chinese input method state, enter Chinese characters directly and then enter letters directly b、onchange = “value=value.replace(/[^\d]/g,”)” Using the onchange event, after entering content, the result will be obtained only when the input loses focus, and […]