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Using Vim's tabs like buffers
..., window = pane, and tab = window. I can move around the room and look in from different windows (tabs). Different windows can have different number, arrangement and size of panes. The same object can be simultaneously viewed from different panes in different windows.
– go2nu...
When should Flask.g be used?
I saw that g will move from the request context to the app context in Flask 0.10, which made me confused about the intended use of g .
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...ay elements to null.
The removeAll(Collection) method, which is inherited from AbstractCollection, removes all the elements that are in the argument collection from the collection you call the method on. It's a relatively slow operation, as it has to search through one of the collections involved.
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How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...1.2.jar together. This is wrong. You're basically mixing JSTL 1.2 API+impl from Oracle with JSTL 1.1 impl from Apache. You need to remove any standard-xxx.jar. Just only the jstl-1.2.jar is sufficient.
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl<...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
... match specified executable file. Failed to read a valid object file image from memory.
– Treper
Nov 29 '11 at 5:07
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Easiest way to check for an index or a key in an array?
... tests only for existence [of parameter]
This answer is actually adapted from the answers for this SO question: How to tell if a string is not defined in a bash shell script?
A wrapper function:
exists(){
if [ "$2" != in ]; then
echo "Incorrect usage."
echo "Correct usage: exists {k...
Exposing database IDs - security risk?
...cular manager's department.
There are schemes to hide the real identifier from an end user (e.g., map between the real identifier and a temporary, user-specific identifier on the server), but I would argue that this is a form of security by obscurity. I want to focus on keeping real cryptographic s...
Is there a way to “autosign” commits in Git with a GPG key?
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Did you just copy and paste this from VonC's answer?
– Robbie Averill
May 15 '16 at 23:59
19
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
...you noted that it's an "unpacking operator", so that I could differentiate from passing by reference in C. +1
– bballdave025
Jun 8 '18 at 0:56
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How to calculate the running time of my program? [duplicate]
...a program and now I want to calculate the total running time of my program from start to end.
6 Answers
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