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https://hoge.com?q=ここに1万文字とか入ってくる場合

RFC 3696 (メールアドレスの長さについて解説)
https://datatracker.ietf.org/doc/html/rfc3696
RFC 5321 (SMTP - Simple Mail Transfer Protocol)
https://datatracker.ietf.org/doc/html/rfc5321
RFC 5322 (メールアドレスのフォーマット定義)
https://datatracker.ietf.org/doc/html/rfc5322

tail -n+2 ${PRJ_DIR}/All_Identifiers_OCP_Data.csv | \
awk 'BEGIN { FS = OFS = "," }
           { if (seen[$2$3$4$5]=="") seen[$2$3$4$5]=$1 ;\
             print $1, seen[$2$3$4$5]}' > ${PRJ_DIR}/linkage/dedup/duplicate_map

Build a key out of 4 fields
key = $2$3$4$5
Check if this key has been seen before
if (seen[key] == "")
    seen[key] = $1
This means:
✔ If this exact combination of fields 2+3+4+5 has NOT been seen before
Store field1 as the first ID associated with this combination.
✔ If it

# 公式用語

ここで言う公式用語は、RFCやIANA・ICANNなどで一般的に使われている用語とする。  

## ドメイン

`example.com` `com` `example.co.jp` `co.jp` `jp` のように、ドットで区切られた階層構造のこと。  
`example.co.jp` だけがドメインじゃなくて、 `co.jp` `jp` `com` もドメインと呼ぶ。  

## ルートドメイン

`example.com.` `com.` `example.co.jp.` `co.jp.` のように、本当はドメインの最後についている「.」のこと。  
最後の「.」以外はドメインではなく、ただの区切り文字で全く意味が違うので注意。  
ちなみに、例えば `example.com.` の場合 `com` はあくまで `com` であって `.com` などではないし、 `example` も `example.` ではない。  

## ラベル

`example.co.jp` でいうと `example` `co` `jp` と

# move all files
find . -type f -exec bash -c 'mkdir -p "${1%/*}/$(date -r "$1" "+%Y")"; mv "$1" "${1%/*}/$(date -r "$1" "+%Y")/"' _ {} \;
# copy files
find . -type f -exec bash -c 'mkdir -p "${1%/*}/$(date -r "$1" "+%Y")"; cp "$1" "${1%/*}/$(date -r "$1" "+%Y")/"' _ {} \;

## Entry Syntax
```00000004 Install-map entry missing component key in populate [l:COMPONENT_NAME_LENGTH]'COMPONENT_NAME' [l:COMPONENT_VERSION_LENGTH]```

## Meaning
The ```identity``` name is missing under ```HKEY_LOCAL_MACHINE\COMPONENTS\DerivedData\VersionedIndex\...\ComponentFamilies\COMPONENT_NAME```.

## Entry Syntax
```00000003 PopulateComponentFamilies ignoring identity-less key [l:COMPONENT_NAME_LENGTH]'COMPONENT_NAME'```

## Meaning
The ```identity``` name is missing under ```HKEY_LOCAL_MACHINE\COMPONENTS\DerivedData\VersionedIndex\...\ComponentFamilies\COMPONENT_NAME```.

/**
 * @param {number} k
 * @return {number}
 */
var smallestRepunitDivByK = function(k) {
    // Step 1: Handle impossible cases
    // Any number made only of '1's is odd and not divisible by 2 or 5.
    // So if k has a factor of 2 or 5, return -1 immediately.
    if (k % 2 === 0 || k % 5 === 0) {
        return -1;
    }

    // Step 2: Initialize variables
    // remainder will track (current number % k) without building the full number.
    // length will track how many '1's we've added so

#sourcetree使用技巧

- ## 查看文件的提交历史
选中文件右键 -> `查看选中的修改日志`

# git总结

## `git reset --mixed <commit>`、`git reset --soft <commit>`、`git reset --hard <commit>`区别
![](https://p.sda1.dev/29/f8c10cb87b04076920df54eddb2d9e8d/image.png)

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import os
import json
from typing import Dict, Any
import pandas as pd
import numpy as np
from sklearn.feature_selection import VarianceThreshold

def variance_threshold_report(df_clean: pd.DataFrame, threshold: float, json_path: str):
    """
    Perform Variance Threshold feature selection and save report as JSON.
    The internal logic and steps remain exactly as the user provided.
    """

    # ----- STEP 1: Select numeric features -----
    dfnumeric = df_clean.select_dtypes(

/**
 * @param {number[]} nums
 * @return {boolean[]}
 */
var prefixesDivBy5 = function(nums) {
    // Result array to store true/false for each prefix
    let answer = [];

    // We'll keep track of the current number modulo 5
    // This avoids dealing with huge binary numbers directly
    let currentMod = 0;

    // Iterate through each bit in nums
    for (let i = 0; i < nums.length; i++) {
        // Shift left (multiply by 2) and add the new bit
        // Example: if currentMod = 2 (binar

#region Get-SMSAdvertisement
function Get-SMSAdvertisement {
    [CmdletBinding()]
    PARAM(
        [Alias('PKG_PackageID')]
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]
        $PackageId
        ,
        [Alias('PRG_ProgramName')]
        [Parameter(Mandatory = $false, Position = 1, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]
        $ProgramNam

function Get-CMSoftwareDistribution {
    [CmdletBinding()]
    PARAM(
        [Alias('PKG_Name')]
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]
        $PackageName
        ,
        [Alias('PKG_PackageID')]
        [Parameter(Mandatory = $false, Position = 0, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true)]
        [string]
        $PackageId
        ,
        [Alias(

inicio{
"host":"xDcfvkSd1hQO+cImKe/PSrvAGcrn",
"porta":"CbyZhQEGptRObG41",
"contador":"lApZ/oR335XEmxKtS2rsVrPemSlytwGHy/5Zg6RAr+Vdj/4KCjhiV9lV2JWho3X9pcw=",
"spammer":"qysQeuDipKwWO7ONRg=="
}fim