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How do I create a parameterized SQL query? Why Should I?
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'Connection string for mysql
Public SQLSource As String = "Server=123.456.789.123;userid=someuser;password=somesecurepassword;database=somedefaultdatabase;"
'database connection classes
Private DBcon As New MySqlConnection
Private SQLcmd As MySqlCommand
Public DBDA As New ...
App Inventor 2 OCR 图片文字识别全方案总结 · App Inventor 2 中文网
...，有兴趣的可以研究一下。
> NMD OCR
.aix 拓展下载：
com.NMD.Ocr.aix
demo 下载：
OcrTestExample.aia
> OCRSpace
.aix 拓展下载：
OCRSpace.aix
demo 下载：
OCRSpace.aia
ocr.space 官网，免费使用，且免费额度...
使用App Inventor 2 控制物联网设备/低功耗蓝牙设备(BLE) · App Inventor 2 中文网
...用 隐私策略和使用条款 技术支持 service@fun123.cn
App Inventor 2 项目合并工具 AIMerge · App Inventor 2 中文网
...用 隐私策略和使用条款 技术支持 service@fun123.cn
Java; String replace (using regular expressions)?
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Fun thing is that the replaceAll method implicitly does Pattern.compile(regex).matcher(testString).replaceAll(regexReplacementString)! So, if you re-use the pattern this way, redundant objects will be avoided. Further, as @Ma...
Convert camelCaseText to Sentence Case Text
... I dig the use of spaces in text.replace, I've been padding function calls with 2+ arguments with spaces for readability too
– rkd
Jan 8 '17 at 20:44
8
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How to sign an android apk file
...pp -keyalg RSA -keysize 2048 -validity 10000
keystore password : yourApp@123
key password : yourApp@123
CMD O/P
D:\ru\SignedBuilds\MySignedApp>keytool -genkey -v -keystore id.keystore
-alias MySignedApp -keyalg RSA -keysize 2048 -validity 10000
Enter keystore password:
Re-enter new pass...
Why does isNaN(“ ”) (string with spaces) equal false?
... that
" " == 0 == false
and
"" == 0 == false
but
"" != " "
Have fun :)
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Java: Multiple class declarations in one file
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You can have as many classes as you wish like this
public class Fun {
Fun() {
System.out.println("Fun constructor");
}
void fun() {
System.out.println("Fun mathod");
}
public static void main(String[] args) {
Fun fu = new Fun();
fu.fun()...
Pass a data.frame column name to a function
I'm trying to write a function to accept a data.frame ( x ) and a column from it. The function performs some calculations on x and later returns another data.frame. I'm stuck on the best-practices method to pass the column name to the function.
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