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Adding placeholder text to textbox
...t = "";
}
}
public void AddText(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(myTxtbx.Text))
myTxtbx.Text = "Enter text here...";
}
Thats just pseudocode but the concept is there.
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How can I count occurrences with groupBy?
...il.*;
import java.util.stream.*;
class Test {
public static void main(String[] args) {
List<String> list = new ArrayList<>();
list.add("Hello");
list.add("Hello");
list.add("World");
Map<String, Long> counted = list.stream()
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How to explicitly discard an out argument?
...the method in another method that does the out parameter for you like so:
String Other_MakeMyCall(String inputParams)
{
String messages;
return MakeMyCall(inputParams, out messages);
}
Then you can call Other_MakeMyCall without having to fiddle with out parameters you don't need.
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Remove by _id in MongoDB console
...id field is not automatically generated (i.e. it is not an ObjectId, but a String), You can just write the value of the _id under quotation marks: db.your.database.remove({"_id": "your value"}).
– Aleksandar
Jun 4 '18 at 16:39
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127 Return code from $?
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If the IBM mainframe JCL has some extra characters or numbers at the end of the name of unix script being called then it can throw such error.
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How to detect if app is being built for device or simulator in Swift
...R_DEVICE_NAME"] != nil;
} else {
return [[self model] isEqualToString:@"iPhone Simulator"];
}
}
@end
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What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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In Python 3, you can only print as:
print("STRING")
But in Python 2, the parentheses are not necessary.
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Test parameterization in xUnit.net similar to NUnit
...oon", true)]
[InlineData("hello world", "hi", false)]
public void Contains(string input, string sub, bool expected)
{
var actual = input.Contains(sub);
Assert.Equal(expected, actual);
}
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How to manually expand a special variable (ex: ~ tilde) in bash
...xpanded by a bash script in that manner because it is treated as a literal string "~". You can force expansion via eval like this.
#!/bin/bash
homedir=~
eval homedir=$homedir
echo $homedir # prints home path
Alternatively, just use ${HOME} if you want the user's home directory.
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How to execute a MySQL command from a shell script?
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best to avoid -p if the password is null or empty string, perhaps you can update your post? :)
– James Oravec
Jan 6 '15 at 23:44
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