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通信连接组件 · App Inventor 2 中文网
...像的Base64编码及解码方法，便于图像文件的通信传输。此插件仅提供2个函数，使用非常方便，几乎没有学习成本。
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EncodeImage
DecodeImage
MqttClient 拓展
.aix 拓展及demo程序打包下载：
UrsAI2Paho.zip
MQT...
Add custom messages in assert?
...==b is false, the and-expression should also be false, and, therefore, the string should not be evaluated.
– ragnarius
Nov 7 '14 at 17:31
1
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How to create a SQL Server function to “join” multiple rows from a subquery into a single delimited
...
Note that Matt's code will result in an extra comma at the end of the string; using COALESCE (or ISNULL for that matter) as shown in the link in Lance's post uses a similar method but doesn't leave you with an extra comma to remove. For the sake of completeness, here's the relevant code from L...
Find out if string ends with another string in C++
How can I find out if a string ends with another string in C++?
20 Answers
20
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Remove portion of a string after a certain character
I'm just wondering how I could remove everything after a certain substring in PHP
15 Answers
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Is there a printf converter to print in binary format?
...es for what you want.
#include <stdio.h> /* printf */
#include <string.h> /* strcat */
#include <stdlib.h> /* strtol */
const char *byte_to_binary(int x)
{
static char b[9];
b[0] = '\0';
int z;
for (z = 128; z > 0; z >>= 1) {
strcat(b, ((x &am...
Get Substring - everything before certain char
...g to figure out the best way to get everything before the - character in a string. Some example strings are below. The length of the string before - varies and can be any length
...
Passing a Bundle on startActivity()?
...ntent(this, Example.class);
Bundle extras = mIntent.getExtras();
extras.putString(key, value);
2) Create a new Bundle
Intent mIntent = new Intent(this, Example.class);
Bundle mBundle = new Bundle();
mBundle.putString(key, value);
mIntent.putExtras(mBundle);
3) Use the putExtra() shortcut meth...
Best way to replace multiple characters in a string?
...ll the methods in the current answers along with one extra.
With an input string of abc&def#ghi and replacing & -> \& and # -> \#, the fastest way was to chain together the replacements like this: text.replace('&', '\&').replace('#', '\#').
Timings for each function:
a)...
std::string formatting like sprintf
I have to format std::string with sprintf and send it into file stream. How can I do this?
40 Answers
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