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How can I check the syntax of Python script without executing it?
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606
You can check the syntax by compiling it:
python -m py_compile script.py
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String concatenation: concat() vs “+” operator
...ing:
java.lang.String cat(java.lang.String, java.lang.String);
Code:
0: new #2; //class java/lang/StringBuilder
3: dup
4: invokespecial #3; //Method java/lang/StringBuilder."<init>":()V
7: aload_1
8: invokevirtual #4; //Method java/lang/StringBuilder.append:...
Should you declare methods using overloads or optional parameters in C# 4.0?
I was watching Anders' talk about C# 4.0 and sneak preview of C# 5.0 , and it got me thinking about when optional parameters are available in C# what is going to be the recommended way to declare methods that do not need all parameters specified?
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What's the difference between dependencies, devDependencies and peerDependencies in npm package.json
...-dev option.
are not installed transitively.
peerDependencies:
before 3.0: are always installed if missing, and raise an error if multiple incompatible versions of the dependency would be used by different dependencies.
expected to start on 3.0 (untested): give a warning if missing on npm install...
Shell script - remove first and last quote (") from a variable
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302
Use tr to delete ":
echo "$opt" | tr -d '"'
Note: This removes all double quotes, not just ...
Changing password with Oracle SQL Developer
...not use SQLPlus. I cannot give them alter user. We expire passwords every 60 days.
14 Answers
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What does the leading semicolon in JavaScript libraries do?
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140
It allows you to safely concatenate several JavaScript files into one, to serve it quicker as on...
Drop unused factor levels in a subsetted data frame
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answered Jul 28 '09 at 22:41
hatmatrixhatmatrix
34.4k3434 gold badges122122 silver badges213213 bronze badges
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How can I create a Makefile for C projects with SRC, OBJ, and BIN subdirectories?
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edited Nov 7 '17 at 16:02
zero298
18.4k55 gold badges4444 silver badges7676 bronze badges
answered Au...
The Android emulator is not starting, showing “invalid command-line parameter”
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edited Jan 9 '12 at 17:40
answered Sep 8 '11 at 17:25
Jor...